I have an ex Honda tech that used to work at a Honda Dealer working for us part time and he said they used 5w30 in some of the higher mileage v-tech engines at the dealer. He drives a 2003 Honda civic with 170,000 miles on it and has used 5 w 30 since he got it. Does anyone here use 5w30 in their civic's ??
When we rebuild them we use 5w20
When we rebuild them we use 5w20