Mobil 1 synthetic gear Oil,,good stuff,,,
I've listend to many trannies with It In there,,,

Louder than HD Formula +,,
The "Clunk" Is always there,,
And I see nothing In It's formula for clutches,,,
Most will not agree with me,,but hey It's a free country
and this my Opinion,,,

So Flame me Mobil 1 guys,,I can take It XD

 

if talking about a sporty, dont the primary and tranny share the same fluid,,,???big twins have seperate tranny, primary ,and engine... seems like 75/90 is too thick for a sporty primary ....jmo

 

It's not the shift clunk that bothers me most although i am not fond of that either.
What bothers me is the loud noise the gears are now making, it has me concerned actually. As i said, i don't really know what was in it and wish i did because it was whisper quiet before the change. This is why i sometimes hate to make changes.
I will pick up some formula+ tomorrow and change it out, i have my fingers crossed.
I will re-post the outcome. Thanks.

 

Gee, I wonder how long I'll have to wait for it to start "slipping"?
73,000 miles using Mobil-1 75-90 syn, and still going strong...
And yep, still on the original clutch plates.

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FYI, SAE Gear Oil is measured on a different "viscosity" scale than the one used for Motor (Engine) Oil.
A 75-90 Gear Oil has roughly the same viscosity as a 20-50 Motor Oil.

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