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September 29th, 2008

Please pardon our dust while we improve the website over the next few days.  If you need anything please feel free to call 616-301-2888 or email Mike.  Thank you!

Q & A: Gearbox Oil

Monday December 22nd, 2008
Q & A, MGA, MGB, MGC, MG T-Type, Midget
I got around to checking the gear box oil today and found that I was low about a pint. My memory told me that the transmission used the same oil as the engine so I put a pint of Castrol GTX 20-50 in the gear box. When I checked my notes I realized I should have used 30 weight motor oil. Do you think I have caused any damage? What should I do now?
What do you recommend for the gear box oil? Should it be detergent or non-detergent?


On a related subject, there is a lot of press these days about engine oil. Specifically, the additives have supposedly been removed from Castrol GTX 20-50. I was told that a better choice now would be Valvoline VR1 20-50 Racing Oil. I would be very interested in your opinion.

The gearbox takes "engine oil" and that Castrol 20W/50 is just great. Now there is some concern with Castrol 20W/50 being API rated and not having enough ZDDP -- and that, according to some, will cause a premature cam failure. But, app... read more