I just bought a 07 gmc siera with a 4.8L. What oil would be good for this engine. Thanks.
Oil for gm 4.8L
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I've got the same engine in my 2000 Silverado and my moms 2002 Silverado.
I've done a few UOAs and Chevron was the best over Pennzoil Conventional (pretty close) and Mobil 1 (last place)
What type of driving and will you be using your OLM? (Oil life monitor)
No difference in MPG over Conventional when I used the Syn. Since my truck gets short trips most of the time, I change it out @ 4k miles or 6months whichever comes first.
If it was me, I'd change the oil and filter @ 1k with the SM rated oil of your choice. Then change it again @5k and follow the OLM.
Enjoy the new truck!
Take care, bill
thanks. the OLM, how does it work? Is it mileage or does it actually monitor the oil. thanks again.
Neither.
What is does and once it is reset, the looks at things like;
Coolant temps
RPM ranges
Outside temps
How much you idle
How many starts and stops
How hard you accel
How much gas is used
Oil temps
And prob about 200 other things.
Then I figures out when to alert you to change the oil. So far the OLMs have been pretty good in telling the owner when the oil is getting close to needing to be changed.
Their are UOAs on this board with owners using the OLM and changing the oil when the OLM went off and the wear metals have been good.
I don't go by the OLM for me as I have for too many years and many engines gotten to 200k+ (and one engine @ 300K+) buy using whatever good oil is on sale (like Pennzoil, Chevron, Castrol GTX, QS, Valvoline or Havoline) and a good filter (Supertech) every 4-5k or 6 months.
My oil changes cost around $5 incl filter so changing it 2-3 times a year works for me. Also since I only spend $10-15 a year on oil for this truck, I do a UOA for trending and to show others here the results.
The way this board is going, I'm prob going to stop the UOAs and get one here and there for my personal use.
I had to take off the valve cover off my 2000 around 40k (and about 6 years old) and the head and valves looked new. Not a hint of anything.
What I'm doing works for me and I guess I need to be happy with that.
Others here will tell you that without $5 a quart oil, your going to kill off your engine with ring pack deposits, engines that will not perform, dirty engines, lower mpg, and other assorted garbage.
Just take care of your engine, buy gas where alot of gas is sold, change the oil and filter when the OLM goes off and you'll be fine. Unless your in a real dusty area (the OLM can not figure that out) or take super short trips all the time.
Take care, Bill
Patman
Staff member
Please don't stop the UOAs Bill, they are very beneficial! As Johnny Five said (in Short Circuit) "need input!!!"
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