Re: Pennzoil Synchromesh in 4-Speed ? - 06/02/1802:11 AM
Sycromesh is a good lube for syncro transmissions that like lighter lube. An 833 likes heavier lube above very cold temps like <10 F. GL4 gear lube is good if you can find it around 90 weight or higher. Redline MT90 is probably better. A synthetic with high temp characteristics of 90 weight and syncro friendly.
Re: Pennzoil Synchromesh in 4-Speed ? - 06/02/1804:17 PM
I put in STA-LUBE 85W-90 GL4 in my 833, but I started to notice a problem with getting it into 2nd gear when cold. Things improve some once its warmed up. I have had people tell me to go with a ATF / Gear Oil mix, but what ratio 50/50, 25/75 should I try?
Re: Pennzoil Synchromesh in 4-Speed ? - 06/02/1805:31 PM
A lot of the new Mopar 4 speed cars came with straight ATF in them from the factory for cars sold in cold weather states, mostly east of the Rockies and north of the Mason Dixon line Mopar had NP update the synchro assemblies multiple times also, the early 1964 to 1967 NP833 first generation synchro mesh where horrible to shift when cold, below 60F