Thread: regular to synthetic oil..
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04-09-2007 02:39 PM #1
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- May 2004
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- Car Year, Make, Model: 66 c 10 fleetside longbed
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regular to synthetic oil..
The new ring and pinion I installed is calling for 75-140 synthetic gl-6 or higher rated , instead the 85-90 regular gear oil for the rear end.The manual trans uses the same fluid as the rear ....would it be ok to switch the manual trans to the synthetic 75-140 also?
or maybe use a lighter synthetic closer to the original weight for trans ,if the weights even cross over between synth and regular oil?Its gunna take longer than u thought and its gunna cost more too(plan ahead!)
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