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steveimpala · 07-11-2023, 11:26 PM

I have a 1969 C20 with the 4 speed ( 435 closed-ratio ) manual transmission. I need to change the oil, any suggestions on brand / weight that I should be using ? FYI... the truck has 88K miles on it.

Thanks !

07-11-2023, 11:26 PM	#1
steveimpala Registered User Join Date: Oct 2017 Location: Wappingers Falls, NY Posts: 122	Gear Lube I have a 1969 C20 with the 4 speed ( 435 closed-ratio ) manual transmission. I need to change the oil, any suggestions on brand / weight that I should be using ? FYI... the truck has 88K miles on it. Thanks !