What gear oil to use in turbo coupe rear? Reply #15 – January 09, 2008, 09:11:14 AM My personal favs are the Motorcraft XL-3 friction modifier, the blue colored skunk piss smelling stuff (I think its made by Dana), and the 75/140 full synthetic, probably the same as that Mopar stuff Dominator is talking about, just different labels. I put that stuff in everything! Quote Selected
What gear oil to use in turbo coupe rear? Reply #16 – January 19, 2008, 08:09:57 PM Royal Purple gear oil has some modifier in it. At least that was they said when I called asked about using their gear oil with the modifier. So I didn't add any modifier and my rear has been great. I used their auto trans oil in my T5 and no problems their either for the 5k miles since changing to their lubes. Quote Selected
What gear oil to use in turbo coupe rear? Reply #17 – January 20, 2008, 05:26:53 AM Quote from: ~AC;196466heh this is kind of off topic, but we did maintenance on an 8.8 trac-lock and had used the friction modifier in it. please explain to us technically "why" since you insisted on it.Quote from: ~AC;196466 there was a guy that didnt last long there b/c he was a dick and a know it all that didnt know ANYTHING and he has the biggest toolbox in the world (i dont get that whole deal where guys have to have the biggest tool box in the shop) but his was so tall and he was a short guy, so we played a prank and took the tube of modifier on the top of his box where he couldnt reach... so after a week or so we couldnt handle the smell either so we clued him in and it wasnt a week later he quit. is this a sentence?Quote from: ~AC;196466good riddance! the shop i worked at at the time had like 2 or 3 returns but when he was working there his cars kept coming back, i guess where he's from a return car is charged for the labor or something but we didnt do that at that shop, if it was a return for a problem we caused it was free. i had to work on some stuff he did and messed up, i cant describe the stupidity!You should start showing off your highly experienced talent since your a mechanic. Quote Selected
What gear oil to use in turbo coupe rear? Reply #18 – January 20, 2008, 05:33:55 AM Like mentioned,, gear box oil.Now, if your looking for the good stuff thats not all full of gimics, get 85w140. Thats some real sticky stuff to and its really hard to wipe off. Its the color of regular motor oil to but sticks to everything.Its easy to find but common at tractor supply places since its used in the south as PTO or Hydraulic fliud. Quote Selected
What gear oil to use in turbo coupe rear? Reply #19 – January 26, 2008, 08:26:23 AM Mobil 1 in my car. Quote Selected
What gear oil to use in turbo coupe rear? Reply #20 – January 26, 2008, 11:51:53 AM Yea lets put tractor oil in our diffs,OOOOOOOOOOOOOOOOOOOOOK.SYNTHETIC OIL IS NOT "All full of Gimicks"it's the best oil there is hands down,more purified than any regular petro based oil.Dude stop being hard on the guy,he's saying that the guy had too many comebacks and he was a dick,i get that completly working in a shop.One bell end ruins the whole thing. Quote Selected
What gear oil to use in turbo coupe rear? Reply #21 – January 26, 2008, 05:05:07 PM I put Castrol 85W90 synthetic with the Ford blue skunk piss smelling stuff in mine (it came with the rebuild kit). And it is one of the smelliest, most difficult to remove smells there is. Years ago when I had my '87 Sport I had to do the wheel bearings, so I got permission from the service manager at the Pontiac dealership I was a service advisor at, brought it in the shop on a Saturday, and replaced the bearings and axles. While doing so I managed to spill some of the used rear end oil on the shop floor. I wiped it up with a rag and forgot about it......until Monday, when I walked into the dealership and the entire building, from the showroom to the lunch room to the offices to the shop, stunk like Ford friction modifier. Naturally, I was not very popular there for a few days...Another fluid that stinks really bad and is really hard to get rid of is carburetor cleaner. I soaked some carburetors from an old outboard motor in some late last summer and I swear I can STILL smell that shiznit in the garage. Quote Selected
What gear oil to use in turbo coupe rear? Reply #22 – January 26, 2008, 07:09:47 PM Make sure the oil you pick is at least gl-5 rated or even better gl-6.(gl-6 rating,this is better suited for harsh environments and gear ratios 373:1 and above.) Quote Selected
What gear oil to use in turbo coupe rear? Reply #23 – February 01, 2008, 02:54:33 AM Thanks guys! I appreciate everyone's input. I'm leaning toward the Lucas 85w140 (JCassity hasn't let me down yet) although I wish I could use synthetic to give it a bit of an edge. But I got this 7.5 rearend at the salvage yard and my plan was to rebuild the traction lok by replacing the clutches, but I was unable to find the clutch pak anywhere.So, I'm just going to install it the way it is, with fresh gear oil, and see what happens. There's a shop not too far from me that told me that they will charge me $600 to replace the traction lok with a new/rebuilt one if it doesn't work for me. I'm hesitant to spend the extra money on synthetic gear oil if it's going to be dumped out within a few miles. Quote Selected
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