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Racinfan83 · 04-29-2016

No additive with Mobil One. I just did mine while I had it up on stands with trans and clutch out. If you don't have a differential drain plug already - I suggest you do it when you change it.

http://www.zr1.net/forum/showthread.php?p=239541

Having just done this - I bought the 1/8 NPT tap on EBay for like $6 and two of the 1/8 NPT plugs on EBay for like $5. I already had the correct 11/32 drill bit. I drilled the thing with it full, using a cordless right angle drill and a drain pan under it. Suggest using a smaller bit to do a pilot dent before using the 11/32 as mine walked a bit...

It took about 1 1/2 liters. FYI it is a Major pain in the

to fill it. Maybe if you have a clean suction gun you can suck new fluid out the bottle and shoot it in there. I didn't have one, tried a couple different hoses attached to the bottle and still made a big mess. So good luck...

04-29-2016	#2
Racinfan83 Join Date: Apr 2013 Location: Eastern Missouri Posts: 773	Re: Diff fluid change No additive with Mobil One. I just did mine while I had it up on stands with trans and clutch out. If you don't have a differential drain plug already - I suggest you do it when you change it. http://www.zr1.net/forum/showthread.php?p=239541 Having just done this - I bought the 1/8 NPT tap on EBay for like $6 and two of the 1/8 NPT plugs on EBay for like $5. I already had the correct 11/32 drill bit. I drilled the thing with it full, using a cordless right angle drill and a drain pan under it. Suggest using a smaller bit to do a pilot dent before using the 11/32 as mine walked a bit... It took about 1 1/2 liters. FYI it is a Major pain in the to fill it. Maybe if you have a clean suction gun you can suck new fluid out the bottle and shoot it in there. I didn't have one, tried a couple different hoses attached to the bottle and still made a big mess. So good luck... __________________ [LEFT][SIGPIC][/SIGPIC][/LEFT] [CENTER][COLOR=Indigo][SIZE=4][I][B] Now Sold 1990 ZR-1 #2093, Black on Black..[/B][/I][/SIZE][/COLOR][/CENTER]