How often do you have the oil changed in your vehicles?
I have tried to stick to a 3000 mile or 3 month benchmark for my family cars and have recommended the same when asked. Several auto manufacturers are specifying longer intervals however.
According to an article in todays mlive.com....
DETROIT (AP) — Most major automakers agree: The adage that you should change your car's oil every 3,000 miles is outdated, and even 5,000 miles may be too often.
Ford Motor Co. became the latest manufacturer to extend its oil life guidelines, making public that it is raising the recommended oil change interval from 5,000 miles to 7,500 on its newly redesigned 2007 models and all subsequent redesigned or new models. more ...
The story goes on to quote representatives of Ford Motor Company pointing out that improvements in the current generation of motor oils allow for the longer times between service.
Other manufacturers are relying on sensors do do the work. Mlive says...
Some manufacturers, such as Honda Motor Co. and General Motors Corp., have stopped making recommendations on all or most of their models, instead relying on sensors that measure oil temperature extremes and engine revolutions over time to calculate oil life and tell drivers when to get the lubricant changed. Oil can lose its lubricating properties if it runs at too low or too high of a temperature.
Peter Lord, executive director of GM's service operations, said oil can last 12,000 miles or even more for many drivers who don't run their vehicles in extreme heat or cold or tow heavy loads.
Yikes! More sensors. According to Ford's guy, they feel that people will go by set mileage intervals, and not trust the sensors. Would you trust the sensors. I assume that they buy these sensors from the same people that bring you the check engine or service engine soon sensors.
I pass.
Toyota has taken a different path altogether. The Mlive piece says...
Toyota Motor Corp. reduced its change interval from 7,500 miles to 5,000 in 2004 in part because it found that more drivers ran their vehicles under severe stop-and-start and short trip conditions that cause oil to deteriorate more quickly, said company spokesman Bill Kwong.
Toyota also had an oil sludge buildup problem on less than 1 percent of its 1997-2002 model year vehicles, Kwong said. Changing the oil more frequently prevents the sludge problem, which he said was caused by owners going more than 7,500 miles before changing oil.
The mechanic that I trust most in this world, told me not long ago that, 3000 mile should be the upper limit of oil use in this part of the country.
It is good advice that is still cheap insurance.