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change oil according to computer?

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Unruh
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PostPosted: Mon Dec 30, 2013 1:31 pm    Post subject: change oil according to computer? Reply to specific post Reply with quote

I didn't want to barge in the oil discussion below, but did find it interesting. I've used Pennzoil for maybe 60 years with no known problem.
My question: I have a 2011 Buick Lucern that will tell me what percentage of oil life I have left. Is it safe to trust it and let it run down to say 5% before I change? I've always changed oil according to the odometer at around 3,000 miles.
 
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David G
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PostPosted: Mon Dec 30, 2013 1:33 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

3000 miles is probably twice as often as you need to change it, just let the computer do it.
 
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GarrettFields
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PostPosted: Mon Dec 30, 2013 1:42 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

I bought a Duramax brand new in 2005. I traded it in 2011(worst move I ever made) with 240k on the odometer. I changed the oil by the computer, it worked out to 8 to 10k mi. When I traded there was nothing wrong with truck, no oil consumption, nothing. I would trust the computer.
 
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Ray
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PostPosted: Mon Dec 30, 2013 1:52 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

3000 is way to early to change oil.Before fuel injection and computers that is what they recomended.My 2010 Silverado usually changes around 9000.
 
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FBH44
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PostPosted: Mon Dec 30, 2013 2:19 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

You know, just thinking about these two recent posts on oil. What the manufacturers are saying, with their computers / timing / amount of time at certain temperatures / RPM"s / speeds, etc, is that the brand of oil doesn"t matter. Any brand you choose must be OK, so long as viscosity index is correct and you change it when they say.
 
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ohiojim
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PostPosted: Mon Dec 30, 2013 2:37 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

used Pennzoil for 60 years with no problems,...I"ve used whatever was cheapest for 46 years and never had an oil related failure, to each his own....
 
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Geo-TH,In
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PostPosted: Mon Dec 30, 2013 2:49 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

Friend has a chevy malibu. At 3000 miles 50%, hasn't used any oil. 4000 miles, down 1/2 quart. 5000 miles still a small % like 10-15% on computer, down 1.5 qts, oil looks like tar. I think it only holds 3.5 qts.

Trust the computer if you want.

I'm sticking to the old school 3K rule.

George
 
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Ferd
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PostPosted: Mon Dec 30, 2013 2:56 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

As far as oil, (especially viscosity) follow the manufacturers recommendation. I change oil and filter every 5000 miles. If you wanted to be sure, pull an oil sample at 5000 miles and if that looks good, pull another when the computer tells you to change.
 
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pete black
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PostPosted: Mon Dec 30, 2013 2:56 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

computer! it monitors engine rpm's and oil temperatures and bases oil changes on those factors. o8 gmc always changed by computer, no problems.
 
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JayinNY
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PostPosted: Mon Dec 30, 2013 3:02 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

Well put,
 
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DaninKansas
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PostPosted: Mon Dec 30, 2013 3:10 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

What you need to pay attention to is the API service categories include SN, SM, SL and SJ for current car engines. Not all 10W30s are the same.
 
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DaninKansas
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PostPosted: Mon Dec 30, 2013 3:13 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

It moniters that - but it doesn't actually monitor the condition of the oil. If your water pump is weeping coolant into your oil pan the computer may say it has 40% left but your engine is full of sludge. You wait until 8000 miles and wonder why your engine is cooked.
 
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Chris(WA)
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PostPosted: Mon Dec 30, 2013 3:14 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

Yep, follow the computers advise. We have a fleet of Chevy vans and do it that way. Seldom if ever have problems due to lubrication.
 
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pete black
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PostPosted: Mon Dec 30, 2013 3:25 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

going by the computer for suggested oil changes does not mean you do not ever check the oil levels and condition of oil.
 
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omahagreg
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PostPosted: Mon Dec 30, 2013 3:38 pm    Post subject: Re: change oil according to computer? Reply to specific post Reply with quote

I don't go by the computer, but Dad has started to do that, with out any problems. We tore a Ford pick up engine down that had used Pennzoil all its life, and we have refused to use that brand ever again! It was absolutely sick what that oil had done in there!
 
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