BW. Velvet Drive Gearbox lubrication.

[oldgit]

Want to top up the lubricating oil/fluid in my 72C gearboxes, googlenet indicates bog standard Dextron III.....
Yet the stuff in there at the moment, appears clear and does not have that distintive auto transmisson fluid pong. ?
My workshop manual is in the loft and cannot summon up the courage to go up and find it.
Any comments ?

 

[omega2]

If you run at under 3000 rpm, engine oil will do. SAE 30

THIS PAGE IS COPIED FROM THE USERS MANUAL, If you doubt me get your ladders out!!

 

[burgundyben]

Go careful, not all seals fitted in BW's will withstand synthetic oils.

 

[oldgit]

Go careful, not all seals fitted in BW's will withstand synthetic oils.

Gearboxes were fitted new in 1985 !
Might speak to BW.

My guess would be it has 30 SAE at the moment.
WOT RPM we might see 2600.

 

[omega2]

Go careful, not all seals fitted in BW's will withstand synthetic oils.

Who mentioned synthetic oil??

 

[oldgit]

just had proper look;
~It is ATF of some description and does have that whiff.

 

[burgundyben]

Who mentioned synthetic oil??

Oldgit mentioned Dexron III which I think is often synthetic.

Some rubber seals are susceptible to attack by synthetic oils, the rubber turns to a sort of jelly. I mention it because a chum changed the oil in his and it led to a pair of complete rebuilds.