What you put in, you'll get back ten fold
Members and searchers please be aware that some of our 'how to' guides do not currently show the intended help photos. This is because photobucket wants to charge a monthly amount for us to view our own pics. The photos are currently being replaced. If you need one of our guides and it is missing pics please let one of the Admin team know and we will make that one a priority for you.
Regards
Admin

How to change gearbox oil writeup

Ask questions about looking after your roadster.
al_p
Moderator
Posts: 295
Joined: Sat Mar 17, 2012 11:15 am
Location: st helens

How to change gearbox oil writeup

Postby al_p » Sat Aug 10, 2013 5:15 pm

Hey i thought i would do a quick guide with pics of how to change the gearbox oil and diff oil this is on my mk2 6 speed but to be honest the mk1 and the 5 speeds are fairly similar also :)

ok tools you will need are a 24mm + 23mm socket and ratchet and a homebrew filling system (look below )

firslty jack up your car or put your car on ramps you need to try and make the car as level as possible lucky for me i have a slanted driveway so it was not to hard to get level.

Image

This is the spirit level on the sill below
Image

Now locate the drain and refill plugs on the gearbox these are on the passenger (near/side) side of the gearbox.
the drain plug is NOT THE BOLT WITH THE TORX it is the one that requires a 24mm socket to undo if you undo the torx bolt the world will stop and we will all die !! fact!

Image

Ok now all your gearbox fluid has all drained clean up the magnetic drain plug and get all the filings off it , these are pretty normal so don't worry .

BEFORE:
Image

AFTER:
Image

Make sure you remember to put the drain plug in and Here is the fun bit and the bit you need a homebrew filler or some kind of pump (i chose the homebrew "shitfiller3000") this compromised of a hosepipe a funnel and a smaller pipe to fit into the fill plug hole and some duck tape. What i did was route the pipe through the engine bay into the gearbox and had a friend put about 500ml in at a time and wait for it to drain through until the correct amount was in the gearbox, have a spare tub incase of any spillage when you remove the pipe from the gearbox.
Image
Image

Now once this is done put the fill plug back in and hey presto the gearbox is done .. now for the diff :)

I used 75w 90 but I've heard others using 80w 90 .

next post to follow
Last edited by al_p on Sat Aug 10, 2013 5:41 pm, edited 1 time in total.
I remember the days when ‘Blue Ray’ was an elderly gentleman who drowned in our local swimming pool.
al_p
Moderator
Posts: 295
Joined: Sat Mar 17, 2012 11:15 am
Location: st helens

Re: How to change gearbox oil writeup

Postby al_p » Sat Aug 10, 2013 5:24 pm

one other thing about the 6 speed box before i talk about the diff there is two other screws people remove by accident while refilling this will also destroy your geabox its another torx one and a ~14mm?further up towards the front these are on the driver side (off/side) in the picture marked red below .. one other maintenance thing when the oil is drained is to check the condition of the reverse switch marked blue , you can unscrew this and check that the press switch is working and not jamming or grinding .
Image
I remember the days when ‘Blue Ray’ was an elderly gentleman who drowned in our local swimming pool.
al_p
Moderator
Posts: 295
Joined: Sat Mar 17, 2012 11:15 am
Location: st helens

Re: How to change gearbox oil writeup

Postby al_p » Sat Aug 10, 2013 5:38 pm

Ok now for the diff , yet again you will need the same tools ratchet and 23mm -24mm socket and the homebrew shitfiller3000

this is a mega easy job (when you squirt both bolts with wd40 the day before)

undo the bottom drain bolt on the diff 24mm should do it and let all the oil drain out then re-install the drain plug.

once you have done this its time to refill so undo the fill plug just up to the right (as in picture below) which in most diffs is a 23mm socket if not it should be a 24mm. now insert the shitfiller3000 into the fill hole and start filling (i fill diffs until the oil starts to overflow out of the fill plug and thats about spot on how much you need )

Image

Image

it about 2-2.5 ltrs for the gearbox and about 1ltr for the diff

to follow is a guide on checking and replacing oil in turret but for the moment i cannot do this due to the rubber on my turret being in a very bad condition and in need of replacement.

if your gearstick to turret seal looks like this do not fill with oil , replace seal then fill or it will just seep out causing a mess on the drive :)
Image
I remember the days when ‘Blue Ray’ was an elderly gentleman who drowned in our local swimming pool.
User avatar
Lazza
Site Admin
Posts: 2569
Joined: Thu Dec 08, 2011 12:05 am
Location: Wokingham
Contact:

Re: How to change gearbox oil writeup

Postby Lazza » Sat Aug 10, 2013 8:13 pm

As yours is a 6 speed you don't have any turret oil as the linkage is lubricated from the gearbox oil. Also, you could have filled the gearbox via the turret :wink:
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)
al_p
Moderator
Posts: 295
Joined: Sat Mar 17, 2012 11:15 am
Location: st helens

Re: How to change gearbox oil writeup

Postby al_p » Sat Aug 10, 2013 8:22 pm

ahhh thats great to know :)
I remember the days when ‘Blue Ray’ was an elderly gentleman who drowned in our local swimming pool.
paggers
Serial Poster
Posts: 616
Joined: Sun Oct 14, 2012 9:42 am
Location: Warrington, Cheshire

Re: How to change gearbox oil writeup

Postby paggers » Sat Aug 10, 2013 8:24 pm

:text-goodpost: Those are both on my jobs list - for both my MX-5s.
Niall


1997 1.8i Roadster in Black
- Induction kit, Stainless Exhaust System, Lowered Springs
1998 1.8i S MX-5 in Silver
- Under restoration

Also into taking a few pictures - check out my website.
User avatar
Mazda Mender
Site Admin
Posts: 12142
Joined: Tue Dec 06, 2011 6:18 pm
Location: Pie land,North west
Contact:

Re: How to change gearbox oil writeup

Postby Mazda Mender » Sat Aug 10, 2013 9:16 pm

Nice one AL :handgestures-thumbup:
M-m
The Disclaimer:-
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 fettling,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
Mk 1 Eunos 96 1.8 blue B2...being fettled
Mk1 Eunos 93 1.6 black S special **gone**
http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
User avatar
Barn1e
Regular
Posts: 122
Joined: Tue Aug 06, 2013 8:16 pm
Location: Haywards Heath, Sussex

Re: How to change gearbox oil writeup

Postby Barn1e » Sat Aug 10, 2013 11:11 pm

So, mine is a 6 speed 2.5, if I get a new turret rubber, take out the old one, drain from underneath, clean and replace drainage plug, remove filler plug (so I can see when full), I can then pour the new oil in through the turret until dribbles out filler hole below. Replace rubber at turret, replace filler plug and job done.

Oil of choice?
Barn1e
MY51 Mk2.5 1.8 Sport in Crystal Blue
User avatar
flea
Site Admin
Posts: 6618
Joined: Wed Dec 07, 2011 8:42 pm
Location: Medway towns, Kent

Re: How to change gearbox oil writeup

Postby flea » Sun Aug 11, 2013 12:06 am

well done :handgestures-thumbup:
Eunos 1.6 special 1989 with a few added extras
Eunos 1991 1.6
Eunos 1990 1.6 project
Mk2 1999 1.8
al_p
Moderator
Posts: 295
Joined: Sat Mar 17, 2012 11:15 am
Location: st helens

Re: How to change gearbox oil writeup

Postby al_p » Tue Aug 13, 2013 8:00 am

i used 75w 90 but ive heard others using 80w 90 woukd not have thought there is enough heat in the uk to justify 80w90
I remember the days when ‘Blue Ray’ was an elderly gentleman who drowned in our local swimming pool.

Return to “Maintenance”

Who is online

Users browsing this forum: No registered users and 1 guest