grease destroys poly bushings?
11-23-2009, 08:54 AM
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Car: 1991 Trans Am GTA
Engine: L98(5.7 L TPI)
Transmission: 700r4(A4)
Axle/Gears: G80 RPO, 3:23s, Auburn Racer's Diff
grease destroys poly bushings?
The other day I was changing the oil in my car.
I decided to grease my polygraphite/polycarbonite (can't remember which) bushings. However, my synco superlube (synthetic) was inadvertantly left in another state during a move, so I only had conventional grease available.
I knew the conventional grease wasn't as good, but I figured it wouldn't hurt until I could squirt some synthetic in there at a later date.
Today I read that regular grease breaks down poly bushings. Do I need to remove the bushings from my car, wash them, and then reapply grease? Or will squirting some fresh synthetic in there do the trick?
Thanks for the help!
Bill
I decided to grease my polygraphite/polycarbonite (can't remember which) bushings. However, my synco superlube (synthetic) was inadvertantly left in another state during a move, so I only had conventional grease available.
I knew the conventional grease wasn't as good, but I figured it wouldn't hurt until I could squirt some synthetic in there at a later date.
Today I read that regular grease breaks down poly bushings. Do I need to remove the bushings from my car, wash them, and then reapply grease? Or will squirting some fresh synthetic in there do the trick?
Thanks for the help!
Bill
11-23-2009, 09:31 AM
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Car: 89 iroc-z
Engine: 305tpi
Transmission: wc-t5
Axle/Gears: 10 bolt 3.08 posi (4 now)
Re: grease destroys poly bushings?
wow glue me attention. I tend to always use cheap greese. i also have poly bushings on mine.... No bad luck so far. over about a year and a half ,but we will see what other say.
11-23-2009, 10:23 AM
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Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: grease destroys poly bushings?
I had always heard the same thing, so I always used powdered poly-graphite to lube mine, back when I had polyurethane bushings on my cars. Now I have rod-ends on my stuff.
11-27-2009, 12:07 AM
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Car: 1987 IROC-Z
Engine: 383 with Edelbrock ProFlow EFI
Transmission: TH350
Axle/Gears: 12 bolt 3.73 Eaton posi
Re: grease destroys poly bushings?
I was niave at the time I ordered all my poly/heim ends. I never got around to ordering the special grease stuff spohn, umi, and many others sell for the polyurethane. I've been using conventional grease for the last two years with no noticeable ill effects.
With that said... I've read that the conventional grease erodes the polyurethane due to the chemical make up of the two. I've never seen pictures proving this to be true so maybe it is just a gimmick. I really don't know.
With that said... I've read that the conventional grease erodes the polyurethane due to the chemical make up of the two. I've never seen pictures proving this to be true so maybe it is just a gimmick. I really don't know.
11-29-2009, 11:17 AM
#5
Re: grease destroys poly bushings?
isnt poly suppose to be almost unaffected by oil, grease, gas, salt and road grime? and they wont dry out etc for like 25yrs? how would grease affect them? lol. id say your fine but it your worried get a tube from UMI and call it a day
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