KmanRuffian

As I understood it though, the regular GM synchromesh already has friction modifiers but the "friction modified" one has an additional additive specifically for certain GM vehicles. I just didn't know if the friction modified stuff was "overkill" because it seems that the other brands of synchromesh fluid (penzoil etc.) are equivalent to the "regular" GM fluid...

dr3d1zzl3

iTrader: (1)

http://www.neosyntheticoil.com/75w90rhd.htm

KmanRuffian

Update: I got some Penzoil Synchromesh (same as the GM stuff but cheaper) and topped off my OEM fluid. Initial impressions are it didn't change much. In all fairness though, it only took a few ounces to top off my fluid. Shifting does feel a bit different, maybe a bit more notchy/loose (I was looking for more fluidity). I can shift into first by rev matching up to 15mph without grinding but this was similar to the performance of the tranny I was experiencing before... I will have to see how it performs when cold because those are the times when I've experienced occasional grinding... So I guess all I can say is that topping off your OEM transmission fluid with Synchromesh doesn't really help shifter feel or action if you weren't having any problems to begin with. Perhaps with a larger proportion of Synchromesh shifter feel would improve. When I do my first scheduled tranny fluid change I will most likely go with a "cocktail" including Synchromesh, purely for the reason that it is supposed to help extend synchro life, which seems to be a problem with our trannies....