What viscosity oil should i use?
How cold is it there? If mornings are around 45*F and up, then use 10W-30 or 10W-40. If it is below 45*F, then use either 5W-30 or 5W-40. If it is on a totally fresh engine rebuild, use the 30 weight. If it is slightly worn on your muscle block above 50K miles, use the 40. Our older muscle can easily use the 40 due to tolerances.