The Mazda5 and the New York Times!

JLove336

Member
I was reading an article in the New York Times discussing how often we ought to change the oil in our cars and how 3,000 miles is really a myth now. As I was reading I came across this section in the article:

"Oil chemistry and engine technology have improved to the point that most cars can go several thousand more miles before changing the oil, Mr. Reed said. A better average, he said, would be 7,500 between oil changes, and sometimes up to 10,000 miles or more...But the situation is not that clear cut, according to Robert Sutherland, a Pennzoil scientist who works at Shell Global Solutions.

Rather than picking a number, Mr. Sutherland said, he recommends following what your owners manual advises. I checked the manual for our 2007 Mazda5 and had to determine if my typical driving included a lot of stop-and-go driving, short distances, extended idling, muddy, rough or dusty roads or really humid or cold temperatures." (headbang)
 
...typical driving included a lot of stop-and-go driving, short distances, extended idling, muddy, rough or dusty roads or really humid or cold temperatures.
Call me dumb but I don't understand how muddy, rough, or dusty roads impact the oil change intervals.

My non scientific observation and from oil discussion and analysis I've seen, I completely agree with the article. Most modern day oils contain a lot more additives and cleaners than they use to, which allows it to last longer and work better. Sludge is a thing of the past unless you REALLY neglect your engine or use some really shady brand of oil. Mileage itself should not dictate when you need an oil change but rather depend on your driving condition (stop-n-go vs. highway), and the temperature variance (up north or down south and how often you turn heats up to normal operating temp). These two variables brake down oils quickly.

My personal opinion is that most commuters (highway) who use dino oil can last 5 K, semi-synthetic can last 7.5K, full synthetic can last 10K, at least. This goes up as the brand of oil gets better but also down if NYC, DC, or Cali if what you call a commute. High revving or high compression motors are better off with higher grade oil.

Here’s another myth, the color of your oil does not indicate if it needs a change. The clean and clear motor oil that you just put in will turn dark very quickly and some oil analysis sheets (Mobile 1) show the oil does not become fully effective until after driving a few thousand miles.
 
Last edited:

New Threads and Articles

Back