When was the last time state tax dollars went toward telling you not to do something?
Ads against drunk driving, certainly. Perhaps ads against smoking cigarettes.
But now, California is embarking on a campaign to persuade its citizens not to change their oil so much.
More modern motor oils, better control of the combustion process through vastly more powerful electronic circuitry, and the persistence of generations-old auto advice have combined to lengthen oil-change intervals.
Yet many of us change our oil more often than we need to.
In California, in fact, roughly half of all drivers change their oil every 3,000 miles--or even more often!--despite manufacturers' recommended intervals for new cars that may be a multiple of that number.
And that, says California's Department of Resources, Recycling and Recovery, wastes oil that could potentially have a far longer life.
According to a story in the Los Angeles Times (also covered by our sister site FamilyCarGuide), the department has launched an ad campaign to encourage owners to be aware of the recommended oil-change interval for their car.
The tagline "Check Your Number," is also the domain name for a website that links owners to a website that gives the the carmaker's recommended interval--these days, often 7,500 to 15,000 miles--for their specific vehicle.
That links to some general advice about what the number means, along descriptions of unusual driving patterns that might require more frequent oil changes. Other more standard advice: Keep your tires properly inflated and switch off the engine if the car is stopped for more than a few seconds.
If every driver moved to the recommended oil-change interval, says a department spokesman, 10 million gallons of engine oil could be saved each year.
The change might as much as halve the amount of money drivers spend on oil changes, which cost $25 and up at quick-change facilities and potentially more at dealerships.
While green concerns aren't necessarily top of mind for many car owners, even in California, the economic argument will likely resonate with lots of people feeling the pinch of the three-year-old recession.
In other words, it's a win-win situation: Driving green means only replacing your engine oil when you really need to, and that saves you money.
Even the shrillest talk-radio hosts may find it hard to fight that one--though we have a sneaking suspicion they'll try anyway.
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After we bought our 2010 Prius, Toyota sent us a letter saying that they'd decided to extend the change intervals to 10k from 5k and that's what we stick with.
Jiffy Lube used to recommend it every 3,000 miles which is an irritation to say the least. But asking them if you need to change your oil often is like asking a barber if you need a haircut!
Related anecdote: I drive an RX8 and the oil gets consumed so I need to keep adding more rather than changing the oil.
MrEnergyCzar
That is something that with the GDI engines is far more likely to occur than in the past. It's critical that the oil be thin enough to flow off the pistons rapidly in order to cool them without overheating the oil.
The SAE standard for filter tests SAE J1858/ISO 4548-12 uses a 20 micron standard plus there is a capacity requirement that goes along with it. If the filter traps too small, then it could plug up prematurely. Not small enough and you have longer life but associated risk from particle wear.
There is no need for a filter to "remove water" for most drivers. Normal operation at full temperature does that.
BYPASS FILTRATION SOLVES THAT DILEMMA! As I stated earlier, that's why full flow filters do not work. Full flow filters cannot get dense enough to clean the oil to the 3 micron level (which is the tolerance between the lubricated moving parts in an engine), not because they will plug up prematurely, (the contaminates that cause you to have to change your oil are WAY smaller than the 20 to 30 micron efficiency of full flow filters) but because it will restrict the oil flow/pressure. IT AIN'T ROCKET SCIENCE!! LOL
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