Max-Gear® is recommended for use in truck and automotive front or rear differentials, manual transmissions and lower gear units of marine engines that specify use of an API GL-5 or GL-4 fluid.
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. It outperforms other GL-5 gear oils because it combines the highest quality synthetic oils with Royal Purple's proprietary Synslide® additive technology. Max-Gear® makes gears run smoother, quieter, cooler and longer without overhauls.
Synthetic oils enable Royal Purple to make superior lubricants, but it is Royal Purple's advanced Synslide® additive technology that gives Royal Purple's EP lubricants their amazing performance advantages. Synslide® additive technology truly is beyond synthetic.™
Synslide® additive technology, Royal Purple's tough, EP lubricating film, provides maximum protection under boundary lubrication conditions typically caused by heavily loaded, slow speed and / or shock load conditions. This tenacious, slippery film significantly improves lubrication and reduces wear by increasing the oil film thickness and toughness, which helps to prevent metal-to-metal contact in gears and bearings.
Synslide® additive technology is noncorrosive to gears and bearings, including case-hardened gears that are easily pitted by conventional sulfur-phosphorus EP oils. Synslide® additive technology displaces water from metal surfaces and excels in protecting equipment in wet environments. It also fortifies the oil against the detrimental effects of heat, which causes oil to oxidize.
75W90, 75W140, 80W90, 85W140
*Available in cases only.
80W90, SAE 90
Team: Nish Motorsports
Drivers: Terry, Mike, Jeff & T.J. Nish
Crew Chief: Cec McCray
Engine / Fuel: V8 674 cu. in. / 30% Nitro Methane / Alcohol
Induction: Natural Aspiration
Hometown: Salt Lake City, UT
14 National and World Land Speed Records
Engine >> Royal Purple® Racing 41
Rear >> Royal Purple® Max-Gear® 75W90