|
there's a wide range of oil viscosities specified in the owner's manual based upon ambient temperatures, and implicitly, type of usage. A more pertinent chart would be based on oil-temperatures.
Regardless, the only oil that goes off the chart on the right to support ever higher temps is the 20w50. So we don't have to worry about decreasing oil viscosity under full-throttle racing conditions.
FRAM oil filter may be a no-no. Look up the list of better oil filters in the original "oil filter study". Many more have been done with similar results.
|