Quote:
Originally Posted by 9linerock
I tell him that every day
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Yeah. Old habits die hard. I was taught the 3K mile oil change thing too.
It was REALLY hard for me to break myself of that. How I did it was I started having my oil analyzed by OilAnalyzers Inc.
First I stretched to 4K miles, tested. Oil in great shape. Then I pushed to 6K, tested. Oil was great. Then 7.5K miles, oil still great.
I do change my Mobil1 in the T4R once a year because I only drive it about 3.5K miles a year. My rule of thumb is 7.5K miles or one year, which ever comes first.
To be honest, if I put on a lot of miles I'd probably change it @ 10K after testing it once with that mileage.