Recently I had my car at a shop for a 120k service which required changing the oil. Two days later, looking at the receipt more closely, I see that they have put in Pennzoil 5w30. At $7.05 a quart, I assume it is some kind of synthetic if not PP.
The car is a 1990 Nissan 300zx non-turbo with 108k that has ran either Castrol GTX, Havoline, or Chevron 10w30 for the past 3-4 years. This same shop said that the rear crank seal "seaps" very slowly.
The manual calls for 10w30 in the local temperature range, and only for 5w30 in colder climates than here year round. Why would a shop do this?
I'm tempted to dump the $30 of oil that's in there and put in some non synthetic 10w30 tomorrow. It seems like a waste but I'm just not comfortable with that grade of synthetic in there with possible leaks, it's not the brand. Oil has been in there for 50 miles +/-.
Should I change it ASAP? What about the filter?
Thanks!
The car is a 1990 Nissan 300zx non-turbo with 108k that has ran either Castrol GTX, Havoline, or Chevron 10w30 for the past 3-4 years. This same shop said that the rear crank seal "seaps" very slowly.
The manual calls for 10w30 in the local temperature range, and only for 5w30 in colder climates than here year round. Why would a shop do this?
I'm tempted to dump the $30 of oil that's in there and put in some non synthetic 10w30 tomorrow. It seems like a waste but I'm just not comfortable with that grade of synthetic in there with possible leaks, it's not the brand. Oil has been in there for 50 miles +/-.
Should I change it ASAP? What about the filter?
Thanks!