with Patches.Your personnel standards & mine are the same.
oil changing Q
Thread Starter
Instructor
Joined: Nov 2006
Posts: 204
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From: Dothan Alabama
oil changing Q
I have had my car now for a little over 2 years, oil has been =changed twice, but whats in there is over a year old, I changed it as soon as I got the car, and again just before leaving over a year ago for a trip to the sand box. I am back now, and the baby has had over 3 K miles put on it. total on the car since owning it is 17K, regardless oil has been in the car over a year, and the on board CPU says it is at 43-46 percent. Should I go ahead and change it since summer is coming here in LA.
Advice and opinions appreciated.
Thanks
Advice and opinions appreciated.
Thanks
Team Owner
Joined: Sep 2001
Posts: 23,283
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From: Lake Elsinore, CA
As a rule, I don't leave used oil - even synthetic, in for longer than a year. It's not like it'll ruin the engine, just my own personal standard.
You could always send a sample out and have it tested.
You could always send a sample out and have it tested.
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1 year old oil=dump it. Then you don't need to think about it. It just feels better driving with fresh, clean oil 
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All I've read,,you CAN run good synthetics for more than a year,,but I would NOT feel comfortable with that. I also do not like letting it sit over winter with old oil,,but that is just me!! Neither is a problem for me as I drive year round,,only letting her sit out the nasty winter spells!! Never sits for more than a few days or a couple of weeks. I go by the DIC and change 2-3 times a year Try this system,,you'll enjoy the car a LOT more!!
!!
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Its always a matter of personal preference but most of us Corvette gearheads would recommend changing it at least once a year. I change mine at the end of each driving season so it doesn't sit all winter with old oil allowing suspended particles to settle.
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I don't drive my car many miles each year, but I do change the oil once a year, regardless of what the miles are or what the oil life monitor says.