Automotive oil and motorcycle oil are not the same. Our small cubic inch, high RPM UTV motors operate under unique conditions in comparison to your daily driver (unless it’s a motorcycle).
Some examples of these unique conditions include:
- Anti-foaming additives reduce/eliminate foaming. High RPMs causes oil to foam, this foaming can cause low/no lubrication conditions, especially in the small oil journals and lifters.
- Detergents to help neutralize combustion byproduct acids that are prone in our engines
- Anti-Oxidizing additives. Short runs, long storage and humidity will cause oxidation and rust.
- Specification on friction properties that help reduce wet clutch slip
The latest automotive API spec is SN. This spec limits the amount of phosphorous that can be contained in the oil. We know that phos is an excellent anti-wear agent, but is also a key factor in exhaust hydrocarbons. The API SN provides a
MAXIMUM phos level of 0.08% mass, whereas JASO MA/MA1/MA2 utilizes a
MINIMUM level of 0.08% and up to 0.12%. This insures that you have enough of this key anti-wear agent, while also addressing the needs of street bikes that utilize catalytic converters.
JASO also limits the amount of sulfated ash. This is mainly due to the dropping phos concentrations in automotive oils. When phosphorus is absent; barium, calcium, magnesium, sodium and potassium are converted to their sulfates. Tin and zinc are converted to their oxides. All these metals are very destructive to soft metals common in motorcycle/atv/utv vehicles (shift forks, bearing liners, ect…). By limiting the amount of sulfated ash, you limit the concentration of these elements and therefore greatly reduce sulfates and oxides in the oil.
I HIGHLY recommend a JASO MA2 oil in any wet clutch application. The MA2 standard tightened the window for friction performance. JASO MA/MA1 are still much better than any API rated oil, MA2 defines a much better friction performance and less possibility for “slipâ€.