whats the word on these advertised high mileage engine oils that are now easily available on the shelf?
i hear they help condition seals to prevent leaks? would it be safe to use on newer engine with low mileage?
i also heard that they were as close to a synthetic formulation but still considered regular oil. is there any truth to that? does it even make sense?
and last. is there any difference between quaker state high mileage, valvoline maxlife or any other advertised high mileage engine oil?
I'm sure this might have been covered before but the search on this board isn't very good.
thanks
i hear they help condition seals to prevent leaks? would it be safe to use on newer engine with low mileage?
i also heard that they were as close to a synthetic formulation but still considered regular oil. is there any truth to that? does it even make sense?
and last. is there any difference between quaker state high mileage, valvoline maxlife or any other advertised high mileage engine oil?
I'm sure this might have been covered before but the search on this board isn't very good.
thanks