[Mgs] Transmission Oil

[Max Heim]

No, ZDDP is not necessary in the transmission. Its function in the engine is to lubricate the tappets.

--
Max Heim
mvheim at sonic.net



> On Jan 28, 2020, at 11:40 AM, Michael MacLean via Mgs <mgs at autox.team.net> wrote:
> 
> I know all the manuals say to use 20w-50 motor oil for the transmission.  Most of those manuals were written back when Castrol GTX 20W-50 was formulated differently. Does the new lower ZDDP content make a difference in the transmission?  I have a regular 4-speed trans in my 69 GT.  The car is new to me and I would like to start from scratch with all the fluids in the car.  Probably not a good idea to even get into what engine oil to use.
> Mike MacLean
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