synthetic oil - how long between changes?

[SoulAssassin]

Originally posted by: CupCak3
amsoil for me and its 20k miles or 1 year.

Amsoil as well but I only put about 6k miles on the Jeep I use it in a year. Still do it once a year per manuf recommendation. They actually say up to 25k miles or 1 year. I can't imagine going 25k miles without changing your oil.

 

[mooseracing]

Originally posted by: Throckmorton
It should really depend on the condition of the oil which you need lab testing to determine. I just do about 4500 miles

Come on join the club spout off the factory number or what the computer tells you, even if it is outrageous.


Glad to see some people are starting to see the light.


On my truck engien it sees 2-3k because if offroad and hgiher heat conditions. Street I see 3-4k. Motorcycle because of Air cooled gets 2-3k at most. 3k is factory specs.


3 months has long been the longest recommended max, it was proven earlier this year in test that it still stands. Thereis too much acid buildup in the engine that breaks down the additives.

 

[chucky2]

Originally posted by: mooseracing

Originally posted by: Throckmorton
It should really depend on the condition of the oil which you need lab testing to determine. I just do about 4500 miles

Come on join the club spout off the factory number or what the computer tells you, even if it is outrageous.


Glad to see some people are starting to see the light.


On my truck engien it sees 2-3k because if offroad and hgiher heat conditions. Street I see 3-4k. Motorcycle because of Air cooled gets 2-3k at most. 3k is factory specs.


3 months has long been the longest recommended max, it was proven earlier this year in test that it still stands. Thereis too much acid buildup in the engine that breaks down the additives.

No.

 

[alfa147x]

every 8 miles

 

[Budmantom]

My car has an OLM and it says that the car can go 7k miles on normal oil so i go that many miles on synthetic.

 

[SSSnail]

Originally posted by: RichieZ

Originally posted by: Maximus96
apparently about 18k miles or one year according to Mini cooper's on board computer. and the mini dealer will not change it under their free maintenance plan unless its been a year or if the computer says its due.

thats weird, bmw is 15K or 1 year.

Yes, but don't you base your oil change according to that schedule. The reasons why they recently change to that schedule is because of the free maintenance that comes with the new cars, less cost to them while keeping the car drivable until the factory warranty wears off. You do notice that BMWs if follow factory maintenance schedule do tend to have problems after their 60K miles.

People usually change their oil between 5K-7K miles, on synthetic, depends on driving conditions.

 

[Vette73]

Originally posted by: SSSnail

Originally posted by: RichieZ

Originally posted by: Maximus96
apparently about 18k miles or one year according to Mini cooper's on board computer. and the mini dealer will not change it under their free maintenance plan unless its been a year or if the computer says its due.

thats weird, bmw is 15K or 1 year.

Yes, but don't you base your oil change according to that schedule. The reasons why they recently change to that schedule is because of the free maintenance that comes with the new cars, less cost to them while keeping the car drivable until the factory warranty wears off. You do notice that BMWs if follow factory maintenance schedule do tend to have problems after their 60K miles.

People usually change their oil between 5K-7K miles, on synthetic, depends on driving conditions.

BMWs problems have nothing to do with the oil. And if you are changing Syn oil at 5k then you are wasting your money for most cars/trucks. European cars go much longer on oil on average and do not have any issues. Oil was changed soon as our standards use to be low for quality and it was also a service that places could charge for. Reg oil today can go 5k easy in most cars/trucks.

The only time I have had to do engine work basd on oil was when people would either run low or do 50k+ on 1 oil change.

 

[iamwiz82]

Originally posted by: RichieZ

Originally posted by: Maximus96
apparently about 18k miles or one year according to Mini cooper's on board computer. and the mini dealer will not change it under their free maintenance plan unless its been a year or if the computer says its due.

thats weird, bmw is 15K or 1 year.

BMW's onboard service reminder is based on gallons of gas consumed, it used to be a lot more, but people got whiny that the distance would jump up and down, I guess.

 

[PlasmaBomb]

whiny people are whiny...

 

[mooseracing]

Originally posted by: Marlin1975

Originally posted by: SSSnail

Originally posted by: RichieZ

Originally posted by: Maximus96
apparently about 18k miles or one year according to Mini cooper's on board computer. and the mini dealer will not change it under their free maintenance plan unless its been a year or if the computer says its due.

thats weird, bmw is 15K or 1 year.

Yes, but don't you base your oil change according to that schedule. The reasons why they recently change to that schedule is because of the free maintenance that comes with the new cars, less cost to them while keeping the car drivable until the factory warranty wears off. You do notice that BMWs if follow factory maintenance schedule do tend to have problems after their 60K miles.

People usually change their oil between 5K-7K miles, on synthetic, depends on driving conditions.

BMWs problems have nothing to do with the oil. And if you are changing Syn oil at 5k then you are wasting your money for most cars/trucks. European cars go much longer on oil on average and do not have any issues. Oil was changed soon as our standards use to be low for quality and it was also a service that places could charge for. Reg oil today can go 5k easy in most cars/trucks.

The only time I have had to do engine work basd on oil was when people would either run low or do 50k+ on 1 oil change.

The longer you run the oil, the more acids build and other chemicals that build up that cause harm, the more moisture there is as it can be all burned off, and the more small debris there is that the filter can't catch. The maintence schedules aren't designed to promote the longest life possible, things are designed to fail eventually. MY failling eventually needs to over 300k. Might be also the reason people run bypass filters.

In the end its not what the oil can stand (except for the additives added to it) it's what is going to degrade the life of the engine the slowest.

 

[randomlinh]

~6k, but I autocross too. UOA shows I can probably hit 8k before any real deterioration.

 

[Vette73]

Originally posted by: mooseracing

Originally posted by: Marlin1975

Originally posted by: SSSnail

Originally posted by: RichieZ

Originally posted by: Maximus96
apparently about 18k miles or one year according to Mini cooper's on board computer. and the mini dealer will not change it under their free maintenance plan unless its been a year or if the computer says its due.

thats weird, bmw is 15K or 1 year.

Yes, but don't you base your oil change according to that schedule. The reasons why they recently change to that schedule is because of the free maintenance that comes with the new cars, less cost to them while keeping the car drivable until the factory warranty wears off. You do notice that BMWs if follow factory maintenance schedule do tend to have problems after their 60K miles.

People usually change their oil between 5K-7K miles, on synthetic, depends on driving conditions.

BMWs problems have nothing to do with the oil. And if you are changing Syn oil at 5k then you are wasting your money for most cars/trucks. European cars go much longer on oil on average and do not have any issues. Oil was changed soon as our standards use to be low for quality and it was also a service that places could charge for. Reg oil today can go 5k easy in most cars/trucks.

The only time I have had to do engine work basd on oil was when people would either run low or do 50k+ on 1 oil change.

The longer you run the oil, the more acids build and other chemicals that build up that cause harm, the more moisture there is as it can be all burned off, and the more small debris there is that the filter can't catch. The maintence schedules aren't designed to promote the longest life possible, things are designed to fail eventually. MY failling eventually needs to over 300k. Might be also the reason people run bypass filters.

In the end its not what the oil can stand (except for the additives added to it) it's what is going to degrade the life of the engine the slowest.

Cars/Trucks have gone over 200k doing 5k oil changes on the older oil with older style motors. In europe 10k plus oil changes are the norm, not the exception.
I was a auto-tech and even ran my own shop and, as I said before, never had a engine issues based on oil except when it was run low or went 50k or so on the oil. Even some oil compnaies are now admitting that 5k on reg oil is easy. These are the same people that make money when you change your oil, not hold onto it.

 

[SSSnail]

The oil may last, but the filter won't, so at least change the filter.

 

[StageLeft]

7500 for mine on synthetic. I do 5k on dino for the other vehicle.