Thread: About checking tranny fluid for a 5spd.
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Old 06-16-2002, 06:21 PM   #18 (permalink)
BlackDeuceCoupe
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Location: Arizona, USA Missing Posts: 2000+
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Car: '98 CiViC Coupe (EJ7)
Mods: '99 CiViC Si (B16A2)
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Quote:
Originally posted by hydramatic99
BDC, would a synthetic 10w30 be an ok choice?
Yes, in an emergency. Motor oil is motor oil, and gear lube is gear lube. You shouldn't run gear lube in a motor, or motor oil in a gear box. Honda CiViC's use a transaxle design. That is, they have transmission gears and differential gears mixed together in a common gear box. Using the correct lubrication is critical to their longevity.

Yes, I know that trannies and differentials are supposed to use different lubes, so whichever oil you stick in there is technically a compromise. That's why you need to use a GOOD API GL-4 gear lube ONLY, which is made for transaxles. API GL-5 lube, which is made for differentials, will eat your tranny and so will motor oil, which, of course, is made for motors.

Sure, Red Line MTL/MT-90 synthetic gear oil costs around 8 bones a quart, but you only need 2-quarts to fill a CiViC transaxle. That's $16.00 to have the world's best gear lube in your ride.

I hope this is making sense. You can't go wrong with Red Line. Using Honda MTF, motor oil or GL-5 gear lube is just like waiting for a time-bomb to go off inside your tranny. Red Line oil is cheap compared to the price of replacing your transaxle, you know?
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