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Old 05-24-2019, 01:43 AM   #71
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Default Re: Serpentine belt

While I can understand gasoline on a belt being not a good thing to get on a belt if I'm not mistaken diesel is a lubricant and not corrosive in and of itself...

Comments, thoughts...?

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Old 05-24-2019, 01:48 PM   #72
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Default Re: Serpentine belt

Originally Posted by sepudo View Post

Comments, thoughts...?

It's not just the reduced friction.

Many of the newer design serpentine belts use EPDM rubber. EPDM is also used for roof membranes. I have used EPDM rubber scraps to make many different seals. I've learned that fuel and oils cause EPDM rubber to expand/swell. It doesn't play well with oil based solvents.

A bit of fuel here and there probably isn't a problem, but soaking/spray over time will likely take a toll.

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Old 05-26-2019, 02:01 PM   #73
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Default Re: Serpentine Belt Replacement

Depending on the rubber, diesel can degrade it rapidly. Especially if its a bio blend. There is a large range of rubbers used under the hood, and even serp belts have a few different types in there construction.
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