How long have you ever gone between oil changes?

[47_MasoN_47]

I do 5k with Mobil 1 synthetic. Change the filter and oil at the same time. It'd probably last longer but I just don't feel like getting an analysis done. It's so easy to change the Yaris oil I'd rather just do it every 5k and not worry about it.

[krolos]

I just had my 3rd oil change done using amsoil 5-30 signature,
went 16,000 miles this time before change and with the 15,000 mile
filter , oil looked the same as it did at 5,000 miles and no burn.
I switched over to using amsoil synthetic at 60,000 miles, at
86,000 now, nice only to change oil about every 10-12 month.

[why?]

there is a reason manufacturers recommend 7500 miles. 3k is just keeping the oil change places in business. So is 5k. I generally go 6 or 7k unless I need to take the car in for something else, or I wait until I see my gas mileage drop.

[randeez]

I wait for the maint req'd light to come on...then wait about 6 months

I usually do about 10k miles with syn 0w-20 or 5w-20/30 and wix filter. i'had tire shop change my oil if it was in there anyway up on rack (lazy) , they use some crap they call "synthetic blend" engine seems to run a bit rough in the upper rpms around 9-10k miles so I went back to doing it myself.
which is usually every 2 or 3 months, and its south florida.... we broke into the 40s maybe once this past winter so I don't worry about cold starts

[JustPassinThru]

Longest I've ever gone is about 7000 miles. Which wasn't that long since it was on a long, long trip...I put those 7000 miles on in two weeks.

It depends on the use. Long, highway trips with minimal idling or stop/go driving, will cause less contamination of the oil. Cold weather and short trips, more.

The danger is twofold: Sludge, which comes from condensation in the crankcase (unavoidable) mixing with the oil; and dilution, gasoline washdown into the crankcase; as well as blowby from the piston rings. Washdown is not a problem with FI these days, but there is no avoiding blowby.

So...the ONLY prudent thing to do with your investment...is CHANGE OIL REGULARLY.

[Rigaud]

Been using Mobile1 on almost all my vehicles the past 30 years and my dad way longer then that. We go 20,000 km between changes on our every day passenger vehicles and 10,000 km on tuned or mod cars. Every 5,000 km we clean or replace the air filter, I usually verify several times before 5,000 km. Also I replace the oil filter every 5,000 km, fill the new oil filter before installing it. I have a 1995 Chrysler minivan for work with 383,000 km, runs perfect. My 1999 SLT Suburban also on Mobile1 with 293,000 km and doesn't pass or burn more oil then when it was purchased new. My dad's 86' Cadilac Fleetwood was sold with 450,000km always on Mobile1 and oil changes at 20,000km, sometimes more. New owner can't believe how well maintained it was and that it doesn't use more oil then new.

So...................personally I have done it with great success and unless you have hands on experience, don't knock it.

[BobTheYaris]

I've gone 10k and change with Royal Purple when moneys been tight. I normally go 7.5k between regular changes with this oil and have been using it for years.

[frambach]

A magnetic plug will only attract and retain ferrous metals. I have a Fumoto oil drain valve in place of my drain plug or I'd consider getting one. I've looked at the FilterMAG products before and have considered being a dealer for them.

My last UOA had the highest ppm content of iron I've ever had and it was at 20ppm. That's with 12,538 on the oil with no top-offs and no filter change. I can assure you there was not enough metal to see with the naked eye.

xb visitor said "I do see metal particles in my oil changes." He/she did not say whether or not they have a mag plug. Without a magnetic plug, that is disturbing information. If he/she is utilizing a mag plug, not so much.