Wallmart sells purple power.
Originally Posted by franklinva_psd
I've been looking to make this switch very soon but I am concerned. The manual says to use 15W-40 when over 90. Here in VA it gets in the low 100's at times. Would this 5W-40 still be fine? What about towing, I have a 15K lb. trailer that normally gets hauled about 200-300 miles; this happens about 4-5 times in the summer.
Would this void the warranty left on the engine if something was to happen?
40w is 40w. there is no difference between the 40w viscosity with 15w-40 and 5w-40
the first number is the viscosity when the oil is colder, the second number is the visocisty when it is hot.
the ending number is what matters for the engine, not the first.
If ^^^ does not help, we can all use any kind of 40w diesel oil. XXw-40