my nephew called me today, he was busy and said his girlfriends car needed an oil change. hes not very mechanically inclined, he only very recently learned how to change his oil but i still end up doing it for him lol, His water pump (92 chevy 4.3) was leaking from the weep hole so bad before he got the truck to me that hed have to stop every 5 minutes to add water. I put a new water pump, and its good to go. Anyway, her car is a 2001 i30, with 111k miles, rough shape but runs pretty good. the 3.0 V6, which specs 5W30, is it a known sludger or oil burner? I used Supertech High Mileage 5W30 with a Fram TG, told her to go 4k miles on it. does this seem like a good combo? Im thinking from here on out of using Pennzoil HM 5W30 with a Fram TG and doing 5-6k ocis. there was no sludge visible through the fill hole. She uses the car daily for work, 30 miles there and 30 back.