Red Line® 20W60 Motorcycle Oil is made especially for air-cooled engines operated in extremely warm environments such as those encountered during the summer in the Southern US. Red Line® lubricants are unique because they contain polyol ester base stocks, the only lubricant base stock that can withstand the incredible heat present in modern jet engines. Red Line® synthetic motor oils use the most stable synthetic lubricant base stocks available and are formulated for wear protection and friction reduction across a wide range of engine operating conditions. Red Lines’® racing heritage is reflected in all of their products…you’ll see more Red Line® products at the track than any other lubricant manufacturer for all of these reasons.
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Red Line’s transmission lubricants enhance smooth shifting, lower operating temperatures and reduce transmission noise.
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This defines Red Line® motor oil as a superior product for air-cooled engines, the heart of all American motorcycles. The thermal stability, film strength and reduced parasitic drag found in Red Line engine oil all contribute to lower operating temperatures, increased engine life and more power. As with the other two oils, the Heavy is not recommended for use with synchro applications due to its slipperiness.Red Line® engine and transmission lubricants have long been the choice of racers and knowledgeable engine builders. This is great for use in high temperature, high load and high “shock” transmissions as the Heavy gear oil does not thin like a regular gear oil would do, keeping its film between the gear teeth, acting as a cushion. This oil can be rated as a 75W250 while providing the same low fluid friction like a 75W90 would do. Used in serious powered vehicles like Drag Cars, Off-Road 4x4 or high power turbocharged cars etc which emit a high amount of torque through the transmission. Not recommended for use in synchro-type transmissions. Good for use in racing differentials to obtain maximum power transfer. 5 07bigdog said: Redline transmission heavy shockproof is good. Good for gears, not so good for bearings from what I have seen in the service dept at a HD dealership. Commonly used in saloon car transmissions with moderate power where the transmission does not see particularly high temperatures or “shock”. Redline transmission heavy shockproof is good. Similar to 75W140 gear oil but it has a lower internal friction like an 80W gear oil or 30W engine oil. Not really recommended for use in synchromesh gearboxes due to its slipperiness.Ī step up from the Superlight version, this oil is recommended for vehicles with a moderate power output where the transmission will see higher loads, temperatures and “shock” than that of the Superlight oil. Formula Ford and similar categories that use a dog-ring type gearboxes are a good example. Used quite a lot in relatively low power vehicles where the gearbox/differential is not highly stressed.
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This oil is used when temperatures are not massively high and the “shock” through the transmission is not too great. Superlight Shockproof gear oil has a viscosity of a 75W90 gear oil but has a lower internal friction, much like an ATF would have. Please note: Due to the clagginess of the oil, it’s recommended this oil is not used in conjunction with oil coolers, oil pumps or oil filters as this can cause blocking of these components. All three of the below oils are for use in wet sump gearboxes and differentials with splash lubrication. The SHOCKPROOF GEAR OILS offer low drag and high protection. A very popular range of gearbox and differential oils for highly loaded racing transmissions and “problem” gearboxes. The viscosity characteristics allow the oil to resist throw off and provide a filmbetween the gear teeth preventing “shock”, “chatter” and tooth breakage in the transmission. Red Line SHOCKPROOF GEAR OIL is a unique transmission fluid that contains a suspension of solid microscopic particles that act as an extreme pressure agent. Here at Merlin we stock all three types Heavy, Lightweight and Superlight in 1 U.S Quart (946ml) bottles. This document has been put together to help you decide which of the Red Line SHOCKPROOF GEAR OILS are best for your vehicle or application.