hi guys,
my dad just gave me his old blazer 98 and he told me that he has been using 20w-50 oil for a long time, but the truck has had some over heating issues, and the heater core wasn't longer working, the a/c is not working either. (i don't know if it has any relation with the oil)
well, the manual says that according to my weather (41 to 77 F) i should use 15w-40 and it's time to do the filter and oil change.
what would you recommend me, stay with the 20w-50 that has been using for a long time (more than 50.000 miles) or change it to 15w-40?
thanks a lot!
pd: it usually runs at 40 psi and around 200 F.
my dad just gave me his old blazer 98 and he told me that he has been using 20w-50 oil for a long time, but the truck has had some over heating issues, and the heater core wasn't longer working, the a/c is not working either. (i don't know if it has any relation with the oil)
well, the manual says that according to my weather (41 to 77 F) i should use 15w-40 and it's time to do the filter and oil change.
what would you recommend me, stay with the 20w-50 that has been using for a long time (more than 50.000 miles) or change it to 15w-40?
thanks a lot!
pd: it usually runs at 40 psi and around 200 F.