6 speed shifts better with TWS

[froggy47]

I have personally done this (today) & it's a big improvement (on my car) so I'd like to pass it along.



When I got my LT4 almost 2 years ago I started with preventative maint. to make it perform as close to 100% new as I could. The 6 speed was a bit notchy/balky. I replaced the clutch slave & that helped some.



Then I replaced the gear oil with GM spec 5w-50 (dino) and that helped a little more but after a few thousand miles it was back to where it was with just the slave replaced.





Today I put Castrol TWS in and wow, it's very smooth. zfdoc turned me onto this and it now drops into gear very easy. I would not have thought a different blend (plus it's synthetic) would make so much difference.



If your 6 speed is like mine was, first verify the clutch slave/master. If it's got 50k plus miles and you believe in PM like I do then replace them.



Then treat your Vette to the Castrol TWS tranny fluid (it's the engine oil for BMW M5). You'll like it.

 

[Jelly]

"Vascular flow of oil through the porous phosphorus-bronze material of each synchronizer is essential for effective BTU heat exchange occurrence. Frequent transmission oil changes (15K-30K miles) will ensure lower Pb particle levels suspended in the oil. The ZF S6-40 6-speed transmission is lubricated by engine type oil. Manufacturer recommendations specify the use of GM P/N 1052931 (5w-30) or BMW P/N 07510009420 (10w-60) oil. The BMW 10w-60 oil is fully-synthetic and is used in the BMW M5 engine."

Froggy,

Did you ever try Redline MTL?

 

[carl97ss]

'96 LT4 Vette 6 speed? GM calls for Dextron III don't they?

 

[carl97ss]

I don't know what kind of power you're running thru the LT4 the T-56 but, I'm push 500 h.p. and 500 lb/ft of torque. I can back up Molakule and his MTLglide.. I'm very pleased w/ it.

 

[MolaKule]

Our MTL-P is an equivalent 5W30 or 75W85 and has a GL4/5 protection rating.

Out MTFGlide is used where ATF is specified, and our SynchroGlide is used where synchromesh-type viscosity fluids are specified.

[ June 01, 2005, 01:06 PM: Message edited by: MolaKule ]