I read "low quality" oil is a possible culprit for oil caused engine problems. I thought all oil here in the U.S. had to measure up to a specification.
What are examples of low quality oil?
Is what they use in Jiffy Lube and Valvoline oil change places examples of low quality oil? At Jiffy Lube I've used semi-synthetic. At Valvoline I had them put in conventional oil the only time I bought my car there.
What are examples of low quality oil?
Is what they use in Jiffy Lube and Valvoline oil change places examples of low quality oil? At Jiffy Lube I've used semi-synthetic. At Valvoline I had them put in conventional oil the only time I bought my car there.