My 07 Mustang GT had a really bad howling/whine a coupke of years ago. Went thru several NAPA reman rear ends before finally pulling a full rear end off a junkyard unit. That was a year ago and all has been good. This week I starting hearing a very slight howl again when I let off the gas at highway speed. Before I took this unit (which i think had around 120k miles on it) i pulled the cover and the fluid that came out was definately not original. I put in Valvoline 75w140.
THat was maybe 7 or 8k miles ago.
Planning on pulling the cover again and replacing this oil. What is the best oil for this application? I do not drive this car hard. Would something like Amsoil Severe gear 75-110 or is there an HPL Gear oil that would give me the best chance at keeping this rear end from getting worse?
THat was maybe 7 or 8k miles ago.
Planning on pulling the cover again and replacing this oil. What is the best oil for this application? I do not drive this car hard. Would something like Amsoil Severe gear 75-110 or is there an HPL Gear oil that would give me the best chance at keeping this rear end from getting worse?