100,000 miles maint.

[greenZJ]

Hey i am gonna hit 100,000 mile sin like 5,000 miles or so and i was planning on changing my fluids, get a tune up and the obviously 100,000 mile stuff, lube in the diffs. As far as the Diffs go what is a good gear lube to replace everyewhere i looks say synthetic, but is there any special brand of synthetic? the D30 and the D35 in my ZJ both take 75w-90 should i stay with that weight as well or change it.... anyone got any thoughts?

Matt

[chrometj]

for my d30 and d35 i used 75w-90 mobil 1 synthetic!