Cooler Engines from Synthetic Oil

Do car engines run smoother and cooler on synthetic oil?

The lubrication properties of synthetic oil will not break down in high heat the way they do in natural oil. I drive a little "econo-box" car that I purchased new in 2003. I have run it on synthetic oil since it hit 5000 miles and have not had one single engine problem with it. I change the oil regularly, once a year! This schedule is at my mechanic's suggestion, he has told me that it really needs changing less often but that once a year is more than frequent enough so I take it in for an annual change.

A few years ago in the summer I was driving home from a celebration that took place on Ellis Island between New Jersey and New York. The temperature was 101' F. The humidity was thick enough to cut with a butter knife. It was a typical NJ summer yuck day. On the highway while I was traveling west back towards New Jersey's Garden State Parkway, I witnessed many newer, high end cars, their engines all boiling over. Their engine hoods were up and steam was being vented from all of the much more expensive fancy brand newer cars. Amazingly my practical little econo-box kept on going, the engine oil temperature indicator never went past the mid line, which is right where it ought to be. It had to be the synthetic oil that made the difference because my car was being subject to the exact same conditions as every other car on the highway and I was running my air conditioner and ventilation fans on high so that I myself could breath. My car was a few years older than many of those that were way-laid by the heat. Keeping the oil cool kept the engine cool it and it kept me going in spite of the searing conditions.

I wound up having to get off the highway and driving down onto local roads in Kearny because the stalled, boiling over cars were too numerous, they were so many stalled cars that they were blocking my passage on the highway.