ANy reason I should not use 5w-30 in a car that has 10w-30 on the filler cap?
The manual recommends 10-30 until very cold temps, than allows for the use of 5-30.
But its' my understanding from what I have read that oil has gotten a LOT BETTER in the last 16 years.
The engine is a GM 3800 from 1995 with about 105,ooo miles on it.
The manual recommends 10-30 until very cold temps, than allows for the use of 5-30.
But its' my understanding from what I have read that oil has gotten a LOT BETTER in the last 16 years.
The engine is a GM 3800 from 1995 with about 105,ooo miles on it.