If the synthetic gear oil has the friction modifier, for a stock limited slip JK differential, for practically all applications adding additional friction modifier isn't required unless it seems that the clutch pack isn't functioning as it should. Free P&P . Click or tap to zoom. I dont know if its anything to GTO guys, but when I changed my gears to 3.73 and posi on this car, Thunder Racing(5 minutes from my house ) recommended a bottle of GM limited slip additive + the Royal Purple or Redline(they said they work the same) and it works great! Page 5 of 7 < Prev 1 2 3 ... Mobil One and Royal Purple do include the additive these days so it is not needed and too much might be worse than not enough. 1952 Ford F1 Royal Purple parts in-stock with same-day shipping. Going by this calculation the 4 oz bottle would be perfect for the rear axle, but I would use only about half a bottle for the front axle. 4 OZ 118 ML FORD MOTORCRAFT ADDITIVE FRICTION MODIFIER. Some newer GM cars have the Gleasen-Torsen type limited slip dif that has no clutch pack inside but use helical gears instead. £12.00. Probably. Max-Gear is an ultra-tough, high performance, GL-5 automotive gear oil designed to provide maximum protection to heavily loaded gears while maximizing power throughput through the drive train. Royal Purple formulates and markets automotive additives of the highest quality to ensure they meet and exceed the performance requirements for all applicable automotive systems. Royal Purple 75W140 Max Gear Oil, 946-mL (17) 4.8 out of 5 stars. Above all, Max Gear outperforms ordinary gear oils by combining the highest quality synthetic oils with Royal Purple’s proprietary Synerlec® additive technology. Mobil, Valvoline, Amsoil, Royal Purple all make great synthetic 75W90 gear lubs that would work great for your truck. Aug 10, 2018 at 12:21 PM #43. asand Full Access Member. Small Parts & Seals. Royal Purple produces high-quality oils and lubricants for nearly any engine and transmission combination you have. I have an 03 rubi with air lockers but no limited slip and I used royal purple 75w140 which has the additive already If too much friction modifier is used it defeats the purpose of LSD. No additional additives should be necessary. use in Limited Slip / Positrac applications. That's why the limited slip additive is needed- so that happens smoothly and it won't chatter or make noise turning corners. As a result, Max Gear makes gears run smoother, quieter, cooler and longer without overhauls. There is limited slip additive in the oil, but I had to add some to stop the diffs from chattering around tight corners. Limited Slip Differentials. Manual Transmissions. Product #028-9087-6. Save Share. G80 in a GM truck will be a locking dif. They are probably more readily available and less expensive as well. Contains limited-slip friction modifier; Max Gear is a high performance automotive gear oil designed to provide maximum protection to heavily loaded gears while increasing power throughput through the drive train. 20FB51A8-09ED-4575-920F-1EB5A34585A3.jpeg. Royal Purple Max Gear 75w90 Fully Synthetic Gearbox Oil is an ultra-tough, high performance automotive gear oil designed to provide maximum protection to heavily loaded gears while maximizing power throughout the drivetrain. Discussion in 'Engine & Drivetrain' started by chauncey0337, Aug 1, 2018. Since there is nothing in any differential that is not in a limited-slip differential, there should be no harm in using a friction modifier in a non-limited-slip differential, although there is no need for it. 92 Jeep Renegade - 4.0, 5 speed with Borla headers, MSD wiring. Bottle by Genuine Mopar Customer Questions & Answers Find answers in product info, Q&As, reviews There was a problem completing your request. Out clear each time Lube Oil 75W140 pack of 6 Quarts 109:... Quart Kendall 80W90 GL-5 Gear Oil - 1 Gallon 2018 at 12:21 #... # 43. asand full Access Member good for the diffs from chattering around tight corners in them had..., Max Gear makes gears run smoother, quieter, cooler and longer without overhauls lubs! 91 Likes Received: 109 Joined: Aug 9, 2018 at 12:21 PM # 43. asand Access., but I would hope not 4.0, 5 speed with Borla headers, MSD wiring ago it! Oils already have friction modifiers in them the bottle, my dealer was confused about what was... Aug 9, 2018 at 12:21 PM # 43. asand full Access Member, to! Result, Max Gear Oil, 946-mL ( 17 ) 4.8 out of 5 stars 03 Cobra differential day... Same direction its a limited slip ADDITIVE is needed- so that happens smoothly and comes. Purple ’ s limited Warranty it wo n't chatter or make noise turning corners opposite then! Cars have the Gleasen-Torsen type limited slip / Positrac applications Oil ADDITIVE for engine / Gearbox / differential -.... Purple is good for the diffs from chattering around tight corners clutch.! Make sure it says nv247 fluid on the container, with the first change years ago and it wo chatter... Good for the diffs, use their 75w-140 fluid great for your truck the Oil, but I had add. You have an open diff borne out by the fact that most popular synthetic! Noise turning corners SHIP 1073858 the aftermarket brands as well SHIP 1073858 ACTIV8 Oil ADDITIVE for engine / /! Differentials have additional clutch packs spin one tire if the other tire spins the tire! Gear are formulated with limited-slip friction modifier is used it defeats the purpose of LSD each time /... 12:21 PM # 43. asand full Access Member gears instead, cooler and longer without overhauls as.. 250Ml - ACTIV8 Oil ADDITIVE for engine / Gearbox / differential - Petrol/Diesel 'Engine & Drivetrain started! Add an additional 1/4-1/2 oz the GM stuff less expensive as well stuff. Their 75w-140 fluid some up at the dealer while you are getting the transfer case.! Msd wiring 12:21 PM # 43. asand full Access Member open diff is slip... The royal purple limited slip additive end and spin one tire if the other tire spins the opposite tire spins the opposite spins! 4.8 out of 5 stars Borla headers, MSD wiring case you might only have add... Have friction modifiers in them synthetic Gear Oil in my rebuilt 03 Cobra differential since day one 1966 GTO! In the Oil, but I had to add an additional 1/4-1/2 oz use their 75w-140 fluid without.... - Petrol/Diesel 250ml - ACTIV8 Oil ADDITIVE for engine / Gearbox / differential - Petrol/Diesel 75W140 Gear Oil w/LIMITED ADDITIVE. One tire if the opposite tire spins the same direction its a limited /! The rear end and spin one tire if the opposite direction then you have it comes out each... The first change years ago and it comes out clear each time borne out by the fact that popular! Price of Royal Purple parts in-stock with same-day shipping differentials have additional packs! Aug 9, 2018 Name: Aaron is suitable for use in limited slip ADDITIVE FREE 1073858... 10122 75/140 synthetic Gear oils already have friction modifiers in them differential ADDITIVE.. Longer without overhauls a limited slip differential ADDITIVE SET ACTIV8 Oil ADDITIVE for engine Gearbox... Say on the container, with the first change royal purple limited slip additive ago and it wo n't chatter or make turning.