Quote:
Originally posted by White93Civic
Everything I've read recommends just using regular 10W-30 motor oil. Why will the motor oil ruin your transmission? Does it gunk it up or something? Thanks for the info.
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10W30 motor oil is not well suited for transmission use because of two factors - shear stability and improper coefficient of friction. In other words, it's not made for trannies, it's made for engines. It doesn't lubricate gears, brass synchros and bushings very well, and what small amount of lubrication it does provide doesn't last very long. Consider it for use in emergencies only. That's what my CiViC manual says and Honda Corp is telling the truth here for once...
OEM tranny oil is okay, but it's dino juice. Red Line is the best. It's synthetic and will make your tranny last forever...