I can't find any 75W-140 locally (except from Ford who wants $20 a quart). Summit sells the 75W-140 but it has a friction modifier in it already. Will that hurt my open differential?

Thanks

 

NO, it will make no diff to an open rear but I'll be checking that stuff out.

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97 Lariet-sc-4.6-4x off road-auto-3.55 LS-
superchip-K&N-3"
pvc air box mod-Granetelli MAF

 

Ted'98,

Check AMSOIL's web site out..$12.05 per quart. I recently ordered some and changed mine out.

TGO-QT - Series 2000 SAE 75W-140 Synthetic Gear Lube - (1) quart bottle - More Info/Product Photos $12.05


http://intershop.amsoil.com/cgi-bin/...7/Catalog/1156

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2000 F-150 XLT, 4x2, 5.4L Supercab, Superchip, Styleside, Black with silver two-tone, 3.55 rear, class III towing package with super engine cooling/auxiliary transmission cooling HD package, Heavy duty shocks, 4 wheel disk ABS, overhead console, sliding rear window, keyless entry, dark graphite interior, in dash CD, factory leather wrapped steering wheel, FORD bedliner, FORD black tubular cab steps, K&N air filter, mar-hyde rubberized undercoating, Modine climate filtration system, Bugflector II, Mobil 1 oil, build 7/2000

 

Thanks guys, I appreciate the feedback.