new truck- regular or synthetic oil?

rebel77 · May 7, 2003

Hi,

I have a 2003 Silverado Z71. I would like to know how often you change your oil. In the past I have changed every 3000 with regular and 5000 with synthetic. I'm debating what to use in the truck. Any suggestions?

Rebel77

Bish · May 7, 2003

I ran dino for the first 1,000 miles then I've run Mobil 1 every 5-6K with a Mobil 1 filter. I've got 92K on her now and my oil analysis guys say it wears like it has 20k on it. THis is mostly highway driving.

wandell · May 7, 2003

I did my first oil change at 3000 miles with conventional oil. I then switched to synthetic at 6000 miles. I now change and use Mobil 1 every 6000 miles.

MattDewalt · May 7, 2003

Here we go again! Dino oil and AC Delco filter whenever the "change engine oil" light comes on. The light comes on about every 4,000 miles on my truck and about every 12,000 miles on the wife's Trailblazer. My reasoning is - that's what the owner's manual says to do and GM will warranty any problems, so why spend more money than necessary. But, if I were planning on keeping either of these vehicles for long over 100k miles, I may think differently.

Please do not interpret this post as "synthetic oil bashing" as was done last time. I do feel synthetics are better than dino oil and they do have there place. There place just isn't in my truck at this time.

rebel77 · May 7, 2003

What exactly is dino oil? Sorry a newbie here.

rebel77

AlanTDickey · May 7, 2003

My truck only has about 550 miles on it, but when I get to 3,000, I am going to try the M1 Synthetic. I went back and forther between that and Dino (=fossil [rebel77]) oil on my 99 Trooper. I consistently got 2 mpg more out of the synthetic on that vehicle. My dad thinks I am crazy, but it was a very consistent difference, and my neighbor had similar results. I'm interested to see how the synthetic may affect my gas mileage on my new truck.

Off topic: I'm getting my AFE Air Induction installed on Fri. I'm also interested to see if that affects my mileage if at all.

Bish · May 7, 2003

In case you didn't catch that dino=fossil.....

Dino is regular pertoleum based oil vs synthetic which is manufactured.

Dino=Dinosaur

rtbrick · May 7, 2003

M1 Synthetic every 5000 miles. I usually use an AC Delco or Purolator oil filter.

nhkid28 · May 8, 2003

Mobil 1 0-30 or 5-30 in the winter and Mobil 1 10-30 the rest of the time. Napa Gold oil filter both changed at 5000 miles.

Stepside Z · May 8, 2003

The best thing to do is break the engine in with dino oil then switch to synthetic. Break in depends on the type of driving you do. I switched my 01 Silverado at 10K because I was driving country roads with no towing.