1999 GMC Sierra 5.3 160k miles. I use Valvoline 5W30 and around 4000 miles I add a quart b/c the add oil light comes on and that lasts me till my change engine oil light comes on at 7k. I think I only put 5 quarts when I changed the oil instead of 6 the last couple times so that might be why. This time I put 6 and after 3000 miles so far she hasn't told me anything. It's really good about not burning oil.

 

Mine started using 1/2 quart per 3000 mi. after my odometer passed 20,000 mi. No bigge from what I've been told.

 

Use about one quart between changes @ 3000 miles - and loving it. By historic standards, oil is cheap. Enjoy!

 

What oil weight do I use? I was running Mobil 1 5W30. But I have since changed to Amsoil 5W30. And she has 48,000 on the clock. But yeah hardly any oil in the catch can... like a few tablespoons. I don't know if it's in my head or not, but the engine sounds smoother to me... but I just might be telling myself that. Oh and it's cheaper than Mobil 1 too

 

My car doesn't use any oil when I don't use nitrous. When I use nitrous a couple of times it burns about a 1/4 - 1/2 quart in 3000 miles.

 

Watch out. A jaberwaki post troll is among us.... he'll probably come here too.

 

none, Amsoil 10w30T

 

I get Valvoline SynPower when the dealership does the
scheduled maintenance, I never see it move off Full on
the dipstick. 22Kmiles, '02 SS.

 

1 quart every 5000 miles or so, I run 10w40 synthetic.

 

Thanks. Would you be snitching on yourself?

 

I switched my last oil change and this stuff really works(used the Mobil 1 version). It's been about 2,000 miles and 30+ passes at the track and I have not needed to add a drop. With the 5W30 I was adding like a 1/2qt. every 2 weeks.

 

Were you using the German Castrol Syntec 0w30?

I may switch to see what kind of results I get.

 

No it's actually the Mobil 1 super syn 0w40, says european car formula on it, has a black top. For some reason I was thinking it was 0W30.

 

Before I switched to the 0w40 and had my catchcan I used a lot more than I do now. I think the catch can makes a big difference.

 

Patman doesn't know me but I am one of those guys, the german castrol is the best oil i have used so far. I used to burn about a quart every 3000 miles and now that I done three oil changes with the castrol I haven't burned a drop. Mobile used to burn about a quart off. And I have made more runs to 130 mph+ a month and haven't burned one drop! German made castrol syntec is the shiz nit!

 

02 SS, 22,500 miles to date 0 oil consuption running Mobil 0W40 syn in 3K miles. This has included over 20 passes at the strip in a 3000 mile stretch.

 

1 quart of semi synthetic every oil change, SS has 52,000 miles.

 

None, never has either, thank goodness.

 

The thicker Syn should do good in winter. I will try a heavier blend next oil change. Any reason why the 0w40 would not be a good idea in winter driving in Michigan? I am assuming that since in is the synthetic and does not thiken really in colder temps here that it should not matter. But, I am guessing.

 

Mine has never used much at all. Maybe at most 1/2 quart, but usually I change it at 2500 miles and it's still clear up on the dipstick where it was when I filled it.