Reply to Thread

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Message: <blockquote data-quote="V98" data-source="post: 3926984" data-attributes="member: 45468">Most oils today are far better than what was produced and sold even 10 years ago. That being said, the new oils are a big component of increased fuel economy and that’s what they’re designed for. Toyota recommends a synthetic oil change every 10,000 miles for my 4-Runner. I ran the oil 10,000 miles one time in my first 4-Runner. There was a noticeable difference in the noise coming from the engine after about 7500 miles.  I change it between 5000 and 6000 miles now. It runs like a champ and gets about the same fuel economy it has since break in. A good synthetic is worth the difference in price. I can’t bring myself to run any oil out to 10K. Just can’t do it.</blockquote>