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post #1 of 10 (permalink) Old 01-05-2013, 11:53 AM Thread Starter
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chaincase oil

i had to drain the synth oil in my chaincase so i could split it and look inside. dont have any left. could i throw 80w-90 gear oil in my case? wont be for too long. will stop by local dealer tomorrow to get more chaincase oil. sled is a 1992 polaris indy 500 classic (with reverse)
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post #2 of 10 (permalink) Old 01-05-2013, 12:35 PM
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No i would wait until you get the proper chain case oil that is the correct composition and viscosity

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post #3 of 10 (permalink) Old 01-05-2013, 12:56 PM
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many oils for the chain case ARE 75w's and 80w's.
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post #4 of 10 (permalink) Old 01-05-2013, 02:23 PM
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You can use ATF in there too.

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post #5 of 10 (permalink) Old 01-05-2013, 03:56 PM
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I always used 80-90 synthetic oil



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post #6 of 10 (permalink) Old 01-05-2013, 04:14 PM
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I always used 80-90 synthetic oil



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post #7 of 10 (permalink) Old 01-05-2013, 04:57 PM
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ATF is closer to the consistency of chaincase fluid. Gear oil has greater shear strength which is needed in gear-to-gear contact. A chaincase has a chain and two sprockets. There isn't a requirement for high shear strength in the lubrication. What is necessary is a thinner oil to permeate into the links of the chain for better lubrication.

In the absense of the correct lube, I would run ATF before gear oil. That said, you hardly ever hear of anyone having issues with a chaincase as long as they run something in there!

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post #8 of 10 (permalink) Old 01-05-2013, 10:30 PM
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ATF can be corrosive to metals and certain rubber seals. The transmissions that use it are designed for its properties. Chain cases are more similar to differentials with 75w-90.

But I agree with BC_DAN. It really doesn't matter. If you run vegatable cooking oil, you will get the exact same life as someone with $$$ factory oil. (as long as the ATF doesn't eat your seals and leak out at least, that would be the * in the story.)

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post #9 of 10 (permalink) Old 01-06-2013, 07:09 AM
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Been using ATF in all my sleds for many years and never had a problem with it causing any leaks.

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post #10 of 10 (permalink) Old 01-06-2013, 08:17 AM
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80-90 is way to heavy!
I use 5W30 Syn oil and syn Lucaus oil treatment!
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