Agree, but that's what the manual specs were "back in the day" that you inquired about.
Lubrication technology is much improved now in a lot of ways, though.
You may want to try something like Synchromax <http://www.royalpurple.com/manual-transmission-fluid.html> and see what happens. Or call their tech line and ask what fluid they suggest you use.
888-382-6300
Thanks,
Gary H.
-----Original Message-----
From: Mike and Linda
Isn't that an awfully big jump in viscosity? I thought ATF was ~10 wt.
There isnt' what I'd call gear rattle, just some light whining
thanks
----- Original Message -----
Dexron ATF in 3 & 4 speed manuals.
If there was excessive gear rattle -- in a car located in a warm
climate -- the Dexron could be replaced with SAE 90
multipurpose gear lube in the 3 speed, and SAE140 in the 4 speed trans.
Thanks,
Gary H.
-----Original Message-----
In my 65 Belvedere 3spd manual tranny is ATF. I check the level, its
fine.
The PO put it in.
The car had a new clutch put in...and there has been very very very little
miles on it (200 in 15 yrs.). the throwout bearing is a little rumbly,
but
not bad. The tranny is a little whinny, not bad though. I just wondering
if putting heavier oil in will quiet it down.
What's required per the manual? 30wt. motor oil?
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