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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#21414 10/04/2004 2:17 PM | Joined: Jul 2002 Posts: 358 Shop Shark | | Shop Shark Joined: Jul 2002 Posts: 358 | I posted a while back about first gear getting increasingly noisy, it was whining like crazy on startup.
It was missing almost a quart of oil...
I added 85w140 gear oil and now it feels tight and buttery smooth, almost too 'cushiony'?. Or is it that I need to get used to it?
Are there any adverse effects to using a 'thicker' oil in the trans? Increased pressure on the gears? | | |
#21415 10/04/2004 6:03 PM | Joined: Feb 2004 Posts: 29,837 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,837 | There shouldn't be a problem with using that lube, especially since it stays at the 85 thickness all the time. It just lubricates like a 140 whern it's hot. That's the same thing a 10W30 oil does. It doesn't physically thicken as it heats up, it just hangs on and lubricates like a thicker viscosity oil when the engine is up to normal temperature. Thw "W" in the designation means "Winter", indicating the flow rate is checked at 0 degrees Farinheit. Your 85W140 will flow like a SAE 85 oil all the time, and lubricate like a SAE 140 at high temperature. Best of both worlds!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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#21416 10/04/2004 7:13 PM | Joined: Jul 2002 Posts: 358 Shop Shark | | Shop Shark Joined: Jul 2002 Posts: 358 | I hope I didnt mess up the gears for lack of proper lubrication... That green monster is a blast to drive and has been for 3 years as a daily driver (from late April to November). I love that truck...  | | |
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