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New Edge Cobras
diff oil: 80w90 or 75w140?
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<blockquote data-quote="01yellercobra" data-source="post: 16665329" data-attributes="member: 35549"><p>My understanding is it comes down the clutch packs. The 03/04 calls for the 75w140 because it's synthetic which is supposedly better for the carbon fiber clutch packs. Since the 99/01 don't have carbon fiber (unless you upgraded) either one is fine depending on your climate.</p><p></p><p>All that being said I've run both in my car with no adverse reactions. But when I ran the 80w90 the diff had about 100k on it. Since replacing the clutch packs I've had 75w140 in there with the recommended friction modifier.</p><p></p><p>I originally put in the O'Reilly's brand with the plan of swapping it out for Lucas after a few hundred miles to flush out whatever particles might be in there from the rebuild. But I ran into an issue where my thread sealer worked a little too good and I almost broke a bit trying to get the drain plug out. So the generic stuff is still in there and I don't have any weird noises yet. That was close to 15k miles ago.</p></blockquote><p></p>
[QUOTE="01yellercobra, post: 16665329, member: 35549"] My understanding is it comes down the clutch packs. The 03/04 calls for the 75w140 because it's synthetic which is supposedly better for the carbon fiber clutch packs. Since the 99/01 don't have carbon fiber (unless you upgraded) either one is fine depending on your climate. All that being said I've run both in my car with no adverse reactions. But when I ran the 80w90 the diff had about 100k on it. Since replacing the clutch packs I've had 75w140 in there with the recommended friction modifier. I originally put in the O'Reilly's brand with the plan of swapping it out for Lucas after a few hundred miles to flush out whatever particles might be in there from the rebuild. But I ran into an issue where my thread sealer worked a little too good and I almost broke a bit trying to get the drain plug out. So the generic stuff is still in there and I don't have any weird noises yet. That was close to 15k miles ago. [/QUOTE]
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diff oil: 80w90 or 75w140?
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