Mobil 1 20,000 mile oil change.

[Gunny]

On my truck, I change the Mobil 1 once a year, usually between 6-7K, and my oil life monitor usually tells me that I still have right around 12% oil life left. But it's an older truck and synthetics weren't around when the truck was made.
I'd hesitate to base my oil changes on a calendar rather than mileage.

 

[Birdhunter1]

I change the oil in my 2007 Ranger twice a year with Mobil 1 Synhetic, which equates to every 7000 miles. I've been running Mobil 1 for about 7 years (or the last 90,000 miles).

 

[Midniteoyl]

I change the oil in my 2007 Ranger twice a year with Mobil 1 Synhetic, which equates to every 7000 miles. I've been running Mobil 1 for about 7 years (or the last 90,000 miles).

This^^ .. I change the oil/filter 2x a year using Mobil 1 oil, Purolater Pure One filter: ~Mid April, and ~Mid October. This usually equates to around 6k-7k miles (almost 2x that the last couple of years though). This is mainly 'cause oil goes through a lot of abuse during the sometimes crazy 40F to -20F temps we usually see here in Winter, and the 70's to 90's with humidity we see during the Summer. Occasionally I will send off oil to a lab. Oil is fine. Analysis is fine. We are rural, so a majority of the drives are usually over 30mi on a 4 lane. In the city (snicker) your mileage may vary.

One trick I do is cross reference the 'OEM' sized filter over the largest size I can find that will fit. The main problem with extended oil changes on synthetic oil is if you get too much dirt in there (for whatever reason) and the oil filter fills and hits by-pass, you increase the wear on the engine. The tiny, tiny filters that are spec'd for cars and SUVs these days are almost laughably small.

Would I go the 15k or now, 20k miles, on oil just 'cause Mobil says I can? No. Probably not. But, having that extra protection for when I do take long trips, or for some reason cant change the oil at the 6 month mark is comforting.

 

[LD1]

Changing engine oil at 3k is old school but pretty fail safe in terms of oil level.

ALL engines burn oil. How much they burn depends on allot of variables including age and wear.

Regardless of personal opinions on extended oil changes, if you do them the biggest thing to remember is keep an eye on oil level.

Old school 3k oil changes, burning a quart every 3-4k was a non issue. And blue smoke typically don't start becoming noticable til a quart every 1000-1500 mi. But burn a quart every 5k, which is still a very healthy engine, and your out by the 20k mark

 

[cat fever]

I use Rotella T6 in my Dodge pickup every 5K. The tractor gets T6 every year or 100 hours. The Audi A6 gets full synthetic every 10K. I'll just keep doing what I'm doing since I've never had an oil related engine failure.

 

[timswi]

I have run Mobil1 and K&N oil filters in my last two GMC 6.2's...Generally the monitor would go off at around 5500 miles. I would go to 7500 and change it. Never had an issue with either..Figure ~1.5x of the monitor based on dino vs synthetic is a reasonable route to take. Didn't want to push the issue too far though. 20k seems too much for my tastes.

 

[MHarryE]

Change the oil in my BMW every 2 years or 22,000 miles. Its now 8 years old and just had its 4th oil change. No engine problems, no measurable oil usage. My F-150 goes 10,000 miles, no measurable usage, no problems, Mobil 1 in that.

 

[clemsonfor]

On my truck, I change the Mobil 1 once a year, usually between 6-7K, and my oil life monitor usually tells me that I still have right around 12% oil life left. But it's an older truck and synthetics weren't around when the truck was made.
I'd hesitate to base my oil changes on a calendar rather than mileage.

Its an "older truck" but has and oil life monitor, yet "synthetics were not around when it was made"????

Is this an aftermarket add on oil monitor that you installed? Anything that is new enough to have an oil life monitor was made when synthetic oil was around? Mobil 1 has been around since the 70s I think! And when I was working in a parts store in the early 00s every major manufacture had a synthetic oil as did our house brand of oil. At that time I don't think anything had oil life monitors , except maybe luxury cars...Mercedes or BMW??

 

[beowulf]

I use Mobil 1 in my 2010 F150 and change about every 6 -7,000 miles - I estimate that about 95% of my miles on the F150 are highway miles. I think I could go longer, but am comfortable with that interval between changes. However, after I reset my oil change meter following an oil change, after somewhere between only 3,000 and 4,000 more miles it will advise that I need to change the oil again. So, what is that about? Not sure if that is set for non synthetic oil, or reads the oil quality, or the time that has passed since the last change, or whatever. Before my oil changes the oil appears to be really clean.

 

[DEWFPO]

I've been using M1, or Amsoil, and a for a time Castrol for years, and I change every 10K, regardless of the amount of time in between. But I also use premium synthetic media filter as well to go the distance. I've been doing this since 1984 and I keep all my vehicles for a long, long time, one had 240K on it before we gave it to someone else who kept driving it for years. I drive in temps anywhere from -20F to +115F.

3k changes, even with dino oil is absolutely crazy. What a waste.

DEWFPO