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Old 06-15-2019, 08:12 AM   #1
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Join Date: May 2011
Location: Halesowen
Default G80 axle oil

Struggling to find a definite answer here.

What oil should I use in a G80/1041 locker?

I keep seeing references to Redline GL5 75/90, but the only i keep finding says on the bottle "for LSD" which I'm told isn't good for the G80?

1990 Volvo 765 D24Tic ZF22. Monark 273 nozzles 163 bar, standard turbo @ 16psi, factory IC, reground LDA pin, more fuel. Running 90/10 WVO/petrol.
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Old 06-15-2019, 08:59 PM   #2
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Join Date: Nov 2002
Location: North of Dallas

I used this last time from O'Reilly:
Masterpro synthetic 75w90 GL5 made for conventional diffs.

'84 242ti, fourth owner, mine since 2003. Always garaged since brand new. Old-school rounds because I like. B21FT, SDS EFI/IGN, TD04HL-15G, T5Z trans with 0.73 OD, hydro clutch, 3.91 diff with unmodified G80.
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Old 06-16-2019, 04:31 PM   #3
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Join Date: Dec 2006
Location: Rushing Lane, Scappoose, OR

Yeah regular GL5 no LSD additives or it won't lock..
1988 245 White slicktop M47 Wagon! 93 b230f. LH 2.4 STS flat flywheel.
1990 745 B230FT Getrag JohnV flywheel 240mm clutch 13c A-cam 3.54 G80 548K
1991 740SE B230FT NPR Strut braces IPD bar A cam 550cc EV14's. 3.73 G80 M90 to put in.
1995 940 White racing wagoon. 13c m90 to put in
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