The great oil change debate

[LAP TOP GAMER]

Wy accountant wife wants to wait until Ostar advises us to change it, right now it is at 19%. I want to change it now being it's Dino oil, she wants to wait.:skep:

 

[mikew2069]

I'll have my first oil change b/t 3-5k miles... My personal preference.

 

[LAP TOP GAMER]

I just don't like letting it got below 20%, for some reason that bugs the hell out of me.

 

[mikew2069]

I've just always been very particular when I have a brand new vehicle on its first oil change. I always try to change it a little early. When I bought my 300C, I had the first oil change done at 1500miles. I plan on waiting for 3000miles on the Tahoe. After the first change, I don't think it really matters as long as the oil level is ok.

 

[73shark]

Most I've talked to recommend first at 500-1,000 mi. and then switch to Mobil 1. My mpg jumped 1 mpg when I switched. Plan to use oil monitor as guide but won't go over about 6,500-7,000 mi no matter what it says or what the level is.

The oil monitor in the DIC isn't part of OnStar. I never got any messages from OnStar to change oil.

 

[mikew2069]

I'm suprised you gained a mpg by chaging to Mobil 1. I'm used to using Castrol GTX:shhh: Hmmmm... dunno if I want to try something new or not....

 

[Bear]

Most I've talked to recommend first at 500-1,000 mi. and then switch to Mobil 1. My mpg jumped 1 mpg when I switched. Plan to use oil monitor as guide but won't go over about 6,500-7,000 mi no matter what it says or what the level is.

The oil monitor in the DIC isn't part of OnStar. I never got any messages from OnStar to change oil.

I'm amazed you guys go that far, I have gotten two (@ 3k miles and 6k) I have 8927 miles and I'm getting the oil changed tomorrow.

OnStar sends you monthly E-mails with a report of your overall vehicle diagnostics, if you are not getting it, you should hit the blue button and have them set it up.

 

[73shark]

OnStar sends you monthly E-mails with a report of your overall vehicle diagnostics, if you are not getting it, you should hit the blue button and have them set it up.

I was getting the diagnostic e-mails but didn't pay any attention to whether or not they said anything about oil. Moot point now as let it expire.

3,000 mi is about right for mineral based and 5,000 for synthetic. That equates to about 50% and 100% on the DIC.