Quote:
Originally Posted by oldtamiyaphile
Has anyone tested old but low milage oil and what did they find?
I ask because my fleet averages ~2,500miles each per year and after a year the oil still looks like new, but I wonder if it's still getting contaminated/ broken down.
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I went through Blackstone labs. They still a sample kit that you put down the dipstick hole. I think it's $25 or so. Then, an oil sample is $25, or $35 with the TBN. It might be worth it for you to have a test instead of changing a fleets' worth of oil.