Rear Main Seal Question
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From: Bellville,Texas
Car: 1985 Iroc-Z
Engine: 440LSX
Transmission: l460e
Axle/Gears: 3.55 Wavetrac
Rear Main Seal Question
Any advantage of using a silicone or Fluoroelastomer rear main seal versus a OEM style rubber one?
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From: Hou. TX
Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: Rear Main Seal Question
I think longevity is the answer, the OEM rubber is more prone to cracking and what not as the seal gets older. All i can think of anyway.
Re: Rear Main Seal Question
I would hope that the flouro-elastomer, silicone and other high-grade seals would be less likely to leak since they are a higher grade material than the OEM seal. Maybe check the fel-pro website and see if they have info or tests on it.
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