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Greetings and welcome to menders, this site was built for every owner that might need her to help keep those bills low and also keep them on the road where they belong, she is run by very passionate enthusiasts owners for passionate enthusiastic owners, see her like a on line garage, there is a lot of tech stuff hopefully explained for everyone to use, if there is something you cannot get your head around, or you feel that there is a strong walk through guide missing that needs creating by one of us or from yourselves, please let us know, we are also on false book and youtube, which as short tech vids to help, and again if you feel there is a vid that would help please get it touch.
the menders is free, but like everything there is a cost to run things and bills( we are just happy its not a heating cost), so if we have saved you hundreds, please throw a small donation in the pot so we can keep on going to carry on helping others in the same way .
*** we are currently looking for a sponsor for this year, so if you have the passion and can see this sites worth to everyone , please get in touch and step forward to help***
And thank heavens that we are now on the way back up the brighter ,warmer longer days, "come on summer", and lets see those project builds.
M-m
Greetings and welcome to menders, this site was built for every owner that might need her to help keep those bills low and also keep them on the road where they belong, she is run by very passionate enthusiasts owners for passionate enthusiastic owners, see her like a on line garage, there is a lot of tech stuff hopefully explained for everyone to use, if there is something you cannot get your head around, or you feel that there is a strong walk through guide missing that needs creating by one of us or from yourselves, please let us know, we are also on false book and youtube, which as short tech vids to help, and again if you feel there is a vid that would help please get it touch.
the menders is free, but like everything there is a cost to run things and bills( we are just happy its not a heating cost), so if we have saved you hundreds, please throw a small donation in the pot so we can keep on going to carry on helping others in the same way .
*** we are currently looking for a sponsor for this year, so if you have the passion and can see this sites worth to everyone , please get in touch and step forward to help***
And thank heavens that we are now on the way back up the brighter ,warmer longer days, "come on summer", and lets see those project builds.
M-m
petrol ron
petrol ron
Hi
am I right in using premium petrol (97ron) for my 1.8 Mk2 1998? There is a sticker on the inside of the filler cap saying 'use premium unleaded'. car seems to like one garage make more than another - some seems to burn a bit smokey on start up. Other there is no problem.
cheers
am I right in using premium petrol (97ron) for my 1.8 Mk2 1998? There is a sticker on the inside of the filler cap saying 'use premium unleaded'. car seems to like one garage make more than another - some seems to burn a bit smokey on start up. Other there is no problem.
cheers
- nedski
- Serial Poster
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Re: petrol ron
I've not really come across different petrol types causing smoke on start up. More often it can be valve stem oil seals leaking oil causing smoke for a short time on start up.
Mk1 1.6 Turbo. Gaz shocks. Tr Lane roll bar.
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
Garage Owner, Lincolshire
Helper to the Scunny track day crew and North Linc's Track Day Club.
www.stokesofkelsey.co.uk
- Mazda Mender
- Site Admin
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Re: petrol ron
The Mk 2 1.8's engines (1998 > 2000) do use oil as a trait of the model/version, so you do need to keep an eye on the dip stick itself not the oil pressure gauge as that is a false gauge and is doing nothing but be there for the ride, we are not taliking a Ltr a week here but if unchecked over a long time it can run low or none, keep it checked and she will be going for many years yet, the petrol is not the problem.
M-m
M-m
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This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.
Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 .
Mk 1 Eunos 90 1.6 soul red ..f/ build
MK 2.1/4 Blue V.S Roadster 1.8 99 ..
MK1 1.8 ,white import.. (Ashleighs)
MK1 1.6 yellow J ltd import.f/build
MK 1 1.8 black Tokyo Ltd..f/build
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.
Mk 1 Eunos 93 black V.S II 1.8 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 .
Mk 1 Eunos 90 1.6 soul red ..f/ build
MK 2.1/4 Blue V.S Roadster 1.8 99 ..
MK1 1.8 ,white import.. (Ashleighs)
MK1 1.6 yellow J ltd import.f/build
MK 1 1.8 black Tokyo Ltd..f/build
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
Re: petrol ron
Your car will run fine on 95 ron fuel. There is no need to use 98 ron.
Different suppliers use different additives and percentages of added alcohol, perhaps this could explain the different smoke levels on start up.
Steve
Different suppliers use different additives and percentages of added alcohol, perhaps this could explain the different smoke levels on start up.
Steve
2004 Mx5 Sport
Re: petrol ron
In Japan they have lower fuel grades than us (and higher fuel grades if they go for their best fuels). Using standard 95RON over here is just fine in any MX5. You won't see any benefit from using a super unleaded despite what many might tell you. The MX5 doesn't use a "learning" ecu that can adapt to different fuel grades.
Lazza
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
- andymaxwell
- Just Run In
- Posts: 32
- Joined: Wed Jul 15, 2015 11:31 am
Re: petrol ron
Just to counter that argument. I bought my first MX5 a month ago. No experience with them before - or indeed anycar that could benefit from SUL petrol.
So the day before yesterday I has driving around with a quarter tank of Sainsbury's and the car was running rough - not bad, but just felt underpowered, lumpy.
I brimmed her (1998 1.8 RS) that evening with Shell V Nitro+ (RON99) and noticed a HUGE improvement upon driving home *but* put it down to confirmation bias. Decided to judge in the morning.
The next morning WOW, the improvement was very much real. She was smoother with a quieter exhaust note (sports exhaust), a MUCH more eager and responsive happier engine. It was like someone had given here a performance tune up. Seriously.
The extra 8% of cost (or whatever it was) is more than made up for by performance - at least in my car. And I don't press the throttle down as much, so I presume I am using less of the stuff.
It's a and a from me.
I won't use cheap petrol from now on, I am a SUnleaded convert.
So the day before yesterday I has driving around with a quarter tank of Sainsbury's and the car was running rough - not bad, but just felt underpowered, lumpy.
I brimmed her (1998 1.8 RS) that evening with Shell V Nitro+ (RON99) and noticed a HUGE improvement upon driving home *but* put it down to confirmation bias. Decided to judge in the morning.
The next morning WOW, the improvement was very much real. She was smoother with a quieter exhaust note (sports exhaust), a MUCH more eager and responsive happier engine. It was like someone had given here a performance tune up. Seriously.
The extra 8% of cost (or whatever it was) is more than made up for by performance - at least in my car. And I don't press the throttle down as much, so I presume I am using less of the stuff.
It's a and a from me.
I won't use cheap petrol from now on, I am a SUnleaded convert.
Re: petrol ron
Super unleaded will be doing nothing to help. Standard unleaded will be just as good. What you are witnessing is that some supermarket fuels are bad. Sainsburys fuel seems to be particularly bad. I've tried their standard and super unleaded and both felt flat. Even their diesel makes my daily sound like a tractor. If you use standard fuel from a better supplier, Shell, Texaco, BP etc. you will be fine.
Personally I find Tesco fuel to be as good as the big names but some people don't like it.
Personally I find Tesco fuel to be as good as the big names but some people don't like it.
Lazza
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
Re: petrol ron
I filled my mk1 1.8 up at a small independent filling station the other week over on the east coast,normal unleaded and noticed within a few miles the car seemed to be a big sluggish and certainly didn't like the hills,so much so that I stopped to have a check noting was amiss under the bonnet.
well I used that tankful hooning around so filled up again with Tesco super unleaded and the difference was remarkable.
pulls cleanly,no hesitation on acceleration feels as smooth as it ever did.
so I for one will continue to use 98ron.
well I used that tankful hooning around so filled up again with Tesco super unleaded and the difference was remarkable.
pulls cleanly,no hesitation on acceleration feels as smooth as it ever did.
so I for one will continue to use 98ron.
- andymaxwell
- Just Run In
- Posts: 32
- Joined: Wed Jul 15, 2015 11:31 am
Re: petrol ron
Lazza wrote:Super unleaded will be doing nothing to help. Standard unleaded will be just as good. What you are witnessing is that some supermarket fuels are bad. Sainsburys fuel seems to be particularly bad. I've tried their standard and super unleaded and both felt flat. Even their diesel makes my daily sound like a tractor. If you use standard fuel from a better supplier, Shell, Texaco, BP etc. you will be fine.
Personally I find Tesco fuel to be as good as the big names but some people don't like it.
Ah, that's really good to know. My experimenting shall continue
Now you mention it I remember preferring Texaco or Esso when filling up my little 1l Yaris. I never felt a huge difference between that and supermarket's in that car but subtle enough to make me have a preference.
You may all find this page interesting too, especially the comments. http://www.carbidoff.com/2012/01/is-shell-v-power-right-for-you/
BTW please don't think I'm purposefully bigging-up Shells fuels here, just happen to have found them to work well for me right now.
- GlennyGills
- Moderator
- Posts: 630
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- Location: Reading
Re: petrol ron
Sometime ago Fifth Gear did a test of various fuels on three cars. Normal saloon, Racy Golf and a Scooby STi. The "normal" saloon showed no difference, the gold some difference and the Scooby significant difference.
https://www.youtube.com/watch?v=Ospimy_4j9k
It all comes down the capability of the ECU to learn the fuel. If as Lazza says, the MX5 doesn't "learn" then the difference is probably not noticeable (except in your pocket).
My other car is a Scooby and I have seen the difference via rolling road.
https://www.youtube.com/watch?v=Ospimy_4j9k
It all comes down the capability of the ECU to learn the fuel. If as Lazza says, the MX5 doesn't "learn" then the difference is probably not noticeable (except in your pocket).
My other car is a Scooby and I have seen the difference via rolling road.
'96 Gleneagles MeisterR Coilovers - engine bling stainless mx5parts full exhaust
Re: petrol ron
The Mk1/2/2.5 ecu doesn't learn. It does not advance timing to make the most of higher octane fuels.
I don't know about Mk3 onwards. I'd expect them to have a learning capacity as that would make them cleaner which is becoming more important.
The test I saw was using an M5 and no fuels, regardless of the octane rating, caused more power. However, some of the cheap fuels did see a reduction in power, especially mid-range torque.
I don't know about Mk3 onwards. I'd expect them to have a learning capacity as that would make them cleaner which is becoming more important.
The test I saw was using an M5 and no fuels, regardless of the octane rating, caused more power. However, some of the cheap fuels did see a reduction in power, especially mid-range torque.
Lazza
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
Re: petrol ron
I do, and always have filled up both my MX5 and my Mini Cooper S on Shell V-Power Nitro+
The Mini performed well on the dyno for a standard engine, 191 bhp when it's meant to be 170. I've no idea if the fuel plays a part, but it surely must make a small difference. And aren't they supposed to have additives that help stop carbon deposits and things too? I know the Minis ECU is meant to learn from the quality of fuel used, and also how it's driven.
I'm going to carry on using it anyway
The Mini performed well on the dyno for a standard engine, 191 bhp when it's meant to be 170. I've no idea if the fuel plays a part, but it surely must make a small difference. And aren't they supposed to have additives that help stop carbon deposits and things too? I know the Minis ECU is meant to learn from the quality of fuel used, and also how it's driven.
I'm going to carry on using it anyway
Re: petrol ron
Cooper S has forced induction and the ecu will learn and advance timing to make the most of higher octane fuels.
Mk1/2/2.5 MX5 won't advance timing. Mk2+ will retard timing if it detects knock but won't advance for higher octane fuel.
Use expensive fuels if it makes you feel good but the truth is it will be having a bigger effect on you than on your car
Mk1/2/2.5 MX5 won't advance timing. Mk2+ will retard timing if it detects knock but won't advance for higher octane fuel.
Use expensive fuels if it makes you feel good but the truth is it will be having a bigger effect on you than on your car
Lazza
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
- andymaxwell
- Just Run In
- Posts: 32
- Joined: Wed Jul 15, 2015 11:31 am
Re: petrol ron
Further update to my petrol testing..
Just tried BP Ultimate (97 RON) on a 500 mile round trip - the first half of the trip was with Shell Nitro V+, the second with BP ultimate.
The difference I felt was that the BP petrol was a little less 'spicy' then the Shell, a little more relaxed or less aggressive in the power department. (I don't know if that makes sense but there was a difference.
Just tried BP Ultimate (97 RON) on a 500 mile round trip - the first half of the trip was with Shell Nitro V+, the second with BP ultimate.
The difference I felt was that the BP petrol was a little less 'spicy' then the Shell, a little more relaxed or less aggressive in the power department. (I don't know if that makes sense but there was a difference.
Re: petrol ron
I'm pretty sure that anything you feel will be more in your head than in the car. Even if the car could "learn" & "adapt" (which it can't) it would need a couple of tankfuls to clear out the old fuel and for the ecu to adjust itself. My Merc adjusts itself and a first tankful of a superior fuel does almost nothing, the 2nd is a bit better and the 3rd onwards feels good for example.
What you are probably doing though is slowly getting rid of the rubbish supermarket fuel.
What you are probably doing though is slowly getting rid of the rubbish supermarket fuel.
Lazza
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
2001 Mk2.5 MX5 1.8 Sport
Hard Dog Deuce
GAZ Gold Pro
Mk3 seats
17” OZ Racing Superturissmo wheels (for the toad)
15” Rota Circuit 10 wheels (for track use)
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