+115 years on a Buick 3800 6cyld. plain 5w30 never a failure,,,
As the title says, what would y’all use for a high mileage engine? What do you think the best is?
I always wonder why everyone makes statements like that? It didn't take any kind of special oil to get to 150k miles. The cheapest oil ever changed at 15k miles might have gotten it to that mileage still running perfect and have it full of sludge. I drove an 05 Impala taxi with 200k that went 60k on one OCI with bulk conventional until the filter rusted out. It ran like new.I would use the same oil that got it to be a high mileage engine