Thanks Chris, That is my backup plan if I can't get the fill plug out.
I will generally change the fluid when I flush the brake and clutch lines, but
I've been thinking of adding the spline/pinion/ etc. check and service to the
fluid interval.
..ED
"back-up plan" Ive been doing this for 10 years now and I can tell you by far its a better plan A to use synthetic hypoid gear oil, it will last 10,000 miles or the life of your tire whichever you use as a rear service interval. Everytime the back wheel comes off you should R/R the drive shaft for lube.........so..........change the final drive oil every time you lube the drive shaft.........