Preferred Gear Oil?
#1
Preferred Gear Oil?
Well my gears are going to go in on October the 11th, and I just need to know what everyone's opinion is on gear oils. The tops brands that I know of is Motorcraft, Amsoil, RP, and Redline. My local performance shop recommended 75w90 oil, but the tag on the limited slip said only 75w140. Any opinions on this?
#3
And you probably already know this - don't fergit the 4oz of LS monkygoop if it's a Ford LS gearset.
http://www.fcsdchemicalsandlubricant...ransaxle Fluid
Or use whatever additive the specific LS gearset manufacturer specifies fer the clutchpacks...
MGD
Last edited by MGDfan; 09-18-2010 at 08:15 PM.
#4
Yep.
And you probably already know this - don't fergit the 4oz of LS monkygoop if it's a Ford LS gearset.
http://www.fcsdchemicalsandlubricant...ransaxle Fluid
Or use whatever additive the specific LS gearset manufacturer specifies fer the clutchpacks...
MGD
And you probably already know this - don't fergit the 4oz of LS monkygoop if it's a Ford LS gearset.
http://www.fcsdchemicalsandlubricant...ransaxle Fluid
Or use whatever additive the specific LS gearset manufacturer specifies fer the clutchpacks...
MGD
#5
#7
Well the LS that's going in is a Ford Trac-Lok that came out of an 02 Exploder (same spline count and axle). The tag that came with it says "75w140 SYNTH OIL ONLY", so I guess that answers which weight to go with. I think I'm just going to be safe and buy 6 quarts of either Amsoil or Royal Purple, depending on which one I can get cheaper.
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#9
You can also use Mobil, Royal Purple, or Lucas. Most quality synthetics come with the friction modifier additive for your limited slip. However, be sure to double check. Red Line sells two different types of oil, one with friction modifier and one without. While you're re-gearing, change the differential cover. Get one that at least has drain and fill plugs to make for easier service. Ideally, your new cover will allow for more fluid capacity and have cooling fins. I like Mag Hytec. But shop around. There are a lot of options.
#10
You can also use Mobil, Royal Purple, or Lucas. Most quality synthetics come with the friction modifier additive for your limited slip. However, be sure to double check. Red Line sells two different types of oil, one with friction modifier and one without. While you're re-gearing, change the differential cover. Get one that at least has drain and fill plugs to make for easier service. Ideally, your new cover will allow for more fluid capacity and have cooling fins. I like Mag Hytec. But shop around. There are a lot of options.
I'm just going to bite the bullet and go for Amsoil. No point in risking a $800 investment just because I didn't want to pay for the good stuff.
#11
#12
#14
Not permanent, should be changed about every 100k. Unlike engine oil, you do not lose any through combustion. Only way to lose gear oil is a leak. Other reasons to change it would be if driven through high water where it could get water into the breather tube.