Technical Gear box oil

Currently reading:
Technical Gear box oil

jezzer

New member
Joined
Feb 6, 2007
Messages
27
I'm planning on changing the gear box oil on my previously very neglected B. I read in the hand book one sort of oil, but then in the service cd it recommends ep80. I've bought some castrol ep 80 but have some valvoline 75w90 semi synthetic gear oil-would that be best? Which should i use for the best gear change/longevity of the gear box-any ideas more than welcome-the gl4 spec is met by the valvoline stuff by the way!
Jezzer
 

LittleRedB

Rosso Corsa of corsa!!!
Joined
May 27, 2007
Messages
5,693
Location
Binfield
Mine is filled with automatic transmission fluid;)

Can you recommend a brand/SAE standard? Also, is there a property in the auto fluid that could cause issues in a manual box (for instance viscosity of the auto oil until it gets warm etc)........?

Like the idea of improving my sometimes stiff gearchange but don't want to do it at the cost of my gearbox seals or worse still my gearbox!! :eek:
 

superspotter

It's got to be yellow!!
Joined
Feb 5, 2007
Messages
1,554
Location
Hyde,Cheshire
Im not sure of the specific oil I have used, I need to check it out. I can say though that I have used it in several different cars with no seal problems etc
 
Joined
May 23, 2007
Messages
2,080
Location
Nicosia
I used the redline MTL oil puchased from demon tweeks. Two US Quarts at £11.95 each. Gear change is much better than before.
 
Joined
May 23, 2007
Messages
2,080
Location
Nicosia
I bought the oil and a few other bits from these guys, there really helpfull.

www,demontweeks.co.uk or 01978 664555

Hope this helps. (y)
 

afroking

New member
Joined
Jul 8, 2006
Messages
1,453
I'm pretty sure its every 70,000 miles according to the service book. There aren't really any indications of it needing to be changed, but all the swarf collects in the bottom of the box from normal wear and tear and also from gears being grinded and this needs to be drained out.
 

HP

I was only doing 80...
Joined
Mar 22, 2002
Messages
13,429
Location
North East
ep80 is a single grade oil, I would go for the synthetic 75w90 - something like Castrol Syntrax or the Valvoline mentioned above.

Auto transmission fluid is designed to do a different job, I wouldn't use it in a manual.
 

afroking

New member
Joined
Jul 8, 2006
Messages
1,453
I'm going to buy some Redline MTL for the B but need to know how much to buy.
 

Robot

New member
Joined
Mar 3, 2007
Messages
1,937
Location
Trondheim
As I have no idea I'll just be referring to the service manual again, which says Tutela ZC 80S.
 
Top