Edwin Pawlowski wrote:

Most new cars recommend 3000 miles under severe conditions.

Not true.

Some recommend 3000. A lot more recommend 5000 for severe, 7500 for
"normal."

The real problem is that the oil change industry has apparently
convinced many people that just about all driving falls into the severe
service category, even though the manufacturer makes it perfectly clear
what they consider severe service, and in reality few people fall into
that category.

Since there's no real downside, at least for the vehicle, in having
unnecessary oil changes, the "cheap insurance" excuses is regularly
trotted out.

Are you going to believe Honda and Toyota, two companies that are
absolutely anal about their reputation for long term dependability, or
are you going to believe Jiffy Lube?