Thanks everyone for the responses! It sounds like there’s a few decent options out there. I’ve heard that this topic is a point of contention for many, but it’s still good to hear everybody’s experiences.
I have a 49 Plymouth Deluxe with the original 218 engine and 3 on the tree transmission. I’m looking to change the transmission and rear differential fluids, but I haven’t found any specs in any of the manuals I’ve read. What oils would you recommend?
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