The difference is how much money you want to flush down the toilet.
Follow the intervals in your car's owner's manual.
Jiffy Lube says 3 months, or 3,000 miles.
Then I see in owner's manuals and other places they say 5,000 miles or more.
Do they not change the filter, or something with a 3,000 mile oil change?
"Tutto nello Stato, niente al di fuori dello Stato, nulla contro lo Stato " -Mussolini
All within the state, nothing outside the state, nothing against the state.
The difference is how much money you want to flush down the toilet.
Follow the intervals in your car's owner's manual.
I generally drive higher mileage cars than most people and change my oil every 3,000 miles. If I run over to around 4K I don't worry about it. I do an oil, filter and chassis lube each time. I also wander around underneath and look for anything that needs attention. I sold a pickup after 10 years and it had nearly 400K on the clock. Even for me it was getting worn out. Except for my Lincoln, every car and truck I have has at least 130K on it right now. They range from 133K on my Mercedes to 196K on my 3/4 ton truck.
Most people can get by with 5K between oil changes. If your engine is worn, the oil will get dirtier than a lower mile engine and 3K is a good idea. If you don't drive much or do only in town driving, 3 months is a good idea to get the avid from internal combustion out of the oil pan. Gasoline blowby makes the oil acidic.
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Recommended change period on my Carina E SE, using semi-synthetic lube is 9000 miles. On my bike it is 4000 miles using fully synthetic. Oil change period depends on many factors all of which are taken into consideration by the various manufacturers. Back in the day when I was running souped up minis and the like and using Duckhams Q20/50 I changed the oil every 2000 miles.
Ken.
Last edited by Ken; 12-09-2010 at 06:45 AM. Reason: Typo.
Die dulci fruimini!
Ken.
Wolds Bikers, Lincolnshire, England.
FWIW, I go by time, not mileage. I change the oil every six months in everything that I put more than a few thousand miles on. But just once per year in other vehicles.
I probably change the oil in less than 1,000 miles in some of my vehicles as that can take a full year. A have a few vehicles at my Reno home that are only used while we're there and never for any real distance. Our 2002 Ford Mustang still looks like a new car (always in the garage) and only has about 25,000 miles on it. And we bought that car used in 2004 with about 15,000 miles on it.
-Don-
I think any oil change place will change the filter regardless of mileage. You pay for it, so why not?
Many people don't like the idea of new oil going through a used oil filter. It cannot be changed too often, but if the oil is changed every 3,000 miles, changing the filter might really just be a FWOTAM (F. Waste Of Time And Money).
But I have the same hang-up. I won't change the oil without changing the filter, even if it really is a FWOTAM.
I don't know if it's true, but I heard somewhere that it is possible to change engine oil too often. The additives are cleaners, a lot stronger in fresh oil, and too much of that too often will cause more wear.
-Don-
"Tutto nello Stato, niente al di fuori dello Stato, nulla contro lo Stato " -Mussolini
All within the state, nothing outside the state, nothing against the state.
Sincerely,
Anthony
'Many are my names in many countries,' he said. 'Mithrandir among the Elves, Tharkûn to the Drarves; Olórin I was in my youth in the West that is forgotten, in the South Incánus, in the North Gandalf; to the East I go not.' Faramir
What nobler employment, or more valuable to the state, than that of the man who instructs the rising generation? Cicero (106BC-43BC)
Do not meddle in the affairs of Win32, for it is subtle, and quick to anger. -D. Martinez
Who knows better - somebody who makes a living out of doing oil changes or the vehicle manufacturer?
3,000 miles may have been relevant 50 years ago, but modern engines & oils will survive happily on much longer oil change intervals - 20,000 miles/2 years is common in Europe!
Whatever solids the filter catches, it keeps. However, the chemicals, such as gasoline combustion byproducts, flows through the engine. Gasoline makes the oil slightly acidic which increases over time. That's why you want to change oil that's been in there a long time even if it isn't used much.
Most modern oil filters are a bypass type. When they get full of solids, they bypass and allow the oil to flow through to keep the engine lubricated. The old canister type filters would just stop up but newer filters don't do that.
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Text if you want to meet him.