Back end 'whine'
Hi, I have a '98 MGF 1.8 VVC, less than 50,000 miles, which has what I would describe as a 'back axle whine'!!! It's speed related from about 30 upwards, not related to engine rpm and its not a wheel bearing or tyre noise. Have drained and refilled the gearbox with Granville Manual Transmission Gear Oil MTF 94 Lubricant Fluid API GL-4 . It occurs whether the engine is cold or hot and is most pronounced under engine load. Disappears when decelerating. Any suggestions would be welcome????