Heavy-Duty Oils
My favorite oils and the ones I most mostly recommend for motorcycle use, are the "heavy-duty" oils. They are commonly misunderstood, and often referred to as "diesel oils." They are NOT energy conserving, have higher zinc levels, as high as 0.16%, and by virtue of their multi-duty have a better engine protection package than an oil that is only rated "SL". These heavy-duty oils are rated SJ or SL, plus CH-4. They are currently closer in formulation to the motorcycle specific oils and to the "SG" oils that many motorcycle makers recommend. Following are some examples of these oils, generally 15w40 oils by industry convention. There may be several other 15w40 oils that I am not familiar with.
1. Castrol RX Super 15w40
2. Chevron Delo 400 15w40
3. Mobil Delvac 1300 Super 15w40
4. Pennzoil Long-Life 15w40
5. Quaker State 4X4 Synthetic Blend 15w40
6. Shell Rotella-T 15w40 (my personal favorite)
7. SuperTech 2000 (WalMart) 15w40
8. Valvoline All Fleet 15w40
9. Castrol Syntec Blend Truck and 4X4 15w40
Motorcycle Motor Oil by Mike Guillory
My favorite oils and the ones I most mostly recommend for motorcycle use, are the "heavy-duty" oils. They are commonly misunderstood, and often referred to as "diesel oils." They are NOT energy conserving, have higher zinc levels, as high as 0.16%, and by virtue of their multi-duty have a better engine protection package than an oil that is only rated "SL". These heavy-duty oils are rated SJ or SL, plus CH-4. They are currently closer in formulation to the motorcycle specific oils and to the "SG" oils that many motorcycle makers recommend. Following are some examples of these oils, generally 15w40 oils by industry convention. There may be several other 15w40 oils that I am not familiar with.
1. Castrol RX Super 15w40
2. Chevron Delo 400 15w40
3. Mobil Delvac 1300 Super 15w40
4. Pennzoil Long-Life 15w40
5. Quaker State 4X4 Synthetic Blend 15w40
6. Shell Rotella-T 15w40 (my personal favorite)
7. SuperTech 2000 (WalMart) 15w40
8. Valvoline All Fleet 15w40
9. Castrol Syntec Blend Truck and 4X4 15w40
Motorcycle Motor Oil by Mike Guillory