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how long has your vehicle gone w/o an oil change

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2007 Toyota FJ Cruiser..
5w30 synth blend
change every 5-6k .. depending on when i get paid 😉
the dummy light goes off after 4800 miles to let me know im close
 
Every 3-3.5k. Going to do it this weekend actually. I can probably stretch it another 1k or so now that I'm on synthetic. With a turbo and all I don't want to go too far on a change.
 
i haven't had my car for long enough but everytime i turn on my engine it reminds me when to go for oil service. i think i have about 7000 miles left before i should change and it'll be synthetic but imma let the dealer do that shit cuz i don't know how.
 
I don't drive all that much (~5-6k miles / year) but still change my oil bi-anually since a fair bit of my driving is < 5-6 miles at a stretch, which doesn't really boil off some of the contaminants.

So far, changing my oil around mid-March (spring break - 5W30) and mid-September (0W30) has worked well for me.
 
Originally posted by: exdeath
Originally posted by: Marlin1975
Changing at 3000miles is a waste

Not necessarily. True the average person won't need to strictly adhere to 3,000 miles with new cars and synthetic oils, but it completely depends on the application and environment as is not automatically a waste. Something as simple as an older car with breathers instead of an enclosed PCV system is going to affect oil change interval regardless of quality of oil.

Simply having synthetic oil doesn't mean jack for the filter or the rate at which an engine produces combustion products or ingests dirt.

Great, the oil will last a million miles, but it's carrying a million miles worth of dirt and metal particulate and junk through the engine and through the dirty filter that started bypassing 990,000 miles ago.

Changing by mileage is only an estimate anyway. The real purpose of changing oil, even a theoretical perfect synthetic that never breaks down or needs to be changed, is the suspension of foreign crap IN the oil and the replenishment of detergents and other additives. An engine is not a perfectly enclosed hermetically sealed and isolated environment.

Hence I change my oil based on when it starts to become opaque and darken, which is coincidentally around 3000-5000 miles. That's enough for me to say the oil suspension is saturated and due for replacement. Of course that only applies for an engine that has been kept meticulously clean from the start; you'll go nuts trying to flush an engine out that turns the oil black as soon as you put it in.

Hmm, I hope to read about this you and this car in 30 yrs when you're at 3M miles or something crazy!
 
Originally posted by: Marlin1975
Most cars/trucks in the US can do 5k on reg oil and 10k on syn.

Changing at 3000miles is a waste and old sales scam by oil change places and oil companies.

Also don;t use Fram.

this is true.

 
I'm at 3600 right now. Not happy about it, but it has been raining all week and I don't have a garage to change the oil in 🙁

I've got mobil 1 synthetic so it is probably ok, just I don't like to do it. Plus, it is the first time I've run mobil 1 through it so I wanted to change it at 3000 to check it out.
 
Originally posted by: SparkyJJO
I'm at 3600 right now. Not happy about it, but it has been raining all week and I don't have a garage to change the oil in 🙁

I've got mobil 1 synthetic so it is probably ok, just I don't like to do it. Plus, it is the first time I've run mobil 1 through it so I wanted to change it at 3000 to check it out.

Unless you car is turbo/raced/etc... you can 5k now and then go for 8-10k after that.

Check the owners manual as a lot of car companys say you can go up to 6k on reg oil.
 
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