Manual Trans & Diff oil

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Manual Trans & Diff oil

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Chevrolet >> Chevy Trucks, Vans & SUV's >> Colorado >> Manual Trans & Diff oil

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Manual Trans & Diff oil - 1/25/2008 1:35:01 PM

hamcginn

Posts: 4
Joined: 1/25/2008
Status: offline

07 Colorado. The owners manual calls for 75W90 synthetic in the diff, 89021-806 (manual trans fluid) in the trans. Am pretty sure the trans fluid is not synthetic. What about using synthetic oil in the trans.

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RE: Manual Trans & Diff oil - 1/30/2008 5:21:27 PM

EvansBlue

Posts: 2379
Joined: 7/12/2007
From: Princeton, NC, USA
Status: offline

Most transmission fluid is synthetic now. If it was natural refined oil, it would lose its viscosity over time and not protect as well. Theres also nothing in the Colorado transmission that can really be damaged by using synthetic fluid anyway. I say use it. It shouldn't make much difference either way.

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