chevz7102

I went to the dealer with my 09 gmc 5.3l and got the oil changed at a normal 3,500 mile oil ineterval and thay said the oil looked very dirty i seen it in the test pad and it did look perty dirty dark brown. The dealer said it could cause varnishing at the top end after manny miles if it stays dark after every 3,500 miles. Is this normal collar after a 3,500 mile interval and also is it woth the $39 dallars for the 15 min engine flush. The total miles on the truck are 16,000. Thanks hope to here back.

scooter k

iTrader: (22)

Not worth the money. I've heard of engines getting ruined from oil flushes.
It would make more sense to change oil sooner.

viciousknid

iTrader: (8)

What the hell kind of oil is your dealership using? I change mine ever 6000 which is actually what newer vehicles call for and it's not all that bad when I change it. That's with 167k miles on the truck.
I'd start checking the oil after they change it to make sure they are even changing it.

If you are concerned I'd pour a can of seafoam in the crank case about 100 miles before your next oil change. However with that few miles you shouldn't need it.

Make sure they are using good oil and filter. IMO use a WIX oil filter and a full synthetic oil.

anthonyc

agreed i run nappa filters which are made by wix and royal purple but i change it every 3000.. but i beat the f ing **** out of my MAX.
Tony

viciousknid

iTrader: (8)

I also use the Napa Gold long filter that is wix.

I beat the living **** outta mine hitting my 6400rpm shift points daily. Still runs great and oil still has color to it at 6k miles.

chevz7102

Hay thanks for the tips everyone thay said thay use mobil and ac deco filter.