thoughts on synethic and oil?
#1
thoughts on synethic and oil?
I have never used synethic oil on my car. I use regular oil since it's from fossil. I change it regiliously every 3k miles. The interesting thought that since synethic is man made, does it needs to be changed more frequently or do they outlast 3k miles before it's time for the oil change. It seems like synethic are likely to get sludge build up if it were the case that you don't need to change it for....let say....5k. I've noticed in my other car, the Mercedes uses Mobil One, and when I open the oil cap, i can see the varnish and a smidge of sludge around the cap ring.
#2
I'm sorry if this seems harsh, but if you take the time to look at the threads on your screen and read them you will find your answers. The next 3 threads are about this same subject. The oil analysis spreadsheet located in this same section has a huge amount of great information.
Short answer: With Amsoil you can go up to 17k or so on 1 oil change and 2-3 filter changes. With Mobil 1 you can go 8-10k or so with 2 filter changes. Oil analysis shows no varnish, sludge or anything of that nature happening in our cars.
Short answer: With Amsoil you can go up to 17k or so on 1 oil change and 2-3 filter changes. With Mobil 1 you can go 8-10k or so with 2 filter changes. Oil analysis shows no varnish, sludge or anything of that nature happening in our cars.
#5
FanaticMadMax, when you said varnish and sludge around your oil cap. Can you please explain this thoroughly? It sounds like condensation may be a culprit. If water of any sort is getting into your oil, chances are you will have to change it more frequently.
#6
Synthetic oil is going is not going to produce the sludge and varnish that a dino oil will because it is much cleaner and has less impurities even with a 7500 to 10000 mile interval.
If you are worried about sludge and varnish, take a look at auto rx.com.
What kind of iron and lead #s are yours UOAs (used oil analysis) showing in these extended drains? Have you seen the Amsoil thicken with these intervals pushing the oil out of grade to a 40 weight? I was unable to find your report on Bill's spreadsheet.
If you are worried about sludge and varnish, take a look at auto rx.com.
Originally Posted by Virus
Short answer: With Amsoil you can go up to 17k or so on 1 oil change and 2-3 filter changes. With Mobil 1 you can go 8-10k or so with 2 filter changes. Oil analysis shows no varnish, sludge or anything of that nature happening in our cars.
What kind of iron and lead #s are yours UOAs (used oil analysis) showing in these extended drains? Have you seen the Amsoil thicken with these intervals pushing the oil out of grade to a 40 weight? I was unable to find your report on Bill's spreadsheet.
#7
I did UOA's for quite some time, but when I moved this year they disappeared My wife Durango didn't experience the 0w-30 thickening. My Maxima however did experience thickening. It never reached a 40 weight oil, but to be honest I change mine every 10k with filter changes at the 5k mark with the Mobil 1 M1-105. Analysis showed I could go longer, but reading about the thickening and knowing that I do the D.C. rush hour thing for up to 4 hours daily I decided that 10k was my number. My wifes Durango would see 1 year intervals with a 6 month filter change. She didn't put many miles on it. We recently got rid of the Durango for a Nissan Titan CC LE. Kinda makes the Maxima's torque seem like a girly man
#8
Originally Posted by FanaticMadMax
It seems like synethic are likely to get sludge build up
Read..
http://forums.maxima.org/showthread.php?t=361671
#11
Originally Posted by Virus
I did UOA's for quite some time, but when I moved this year they disappeared: My Maxima however did experience thickening. It never reached a 40 weight oil, but to be honest I change mine every 10k with filter changes at the 5k mark with the Mobil 1 M1-105. Analysis showed I could go longer, but reading about the thickening and knowing that I do the D.C. rush hour thing for up to 4 hours daily I decided that 10k was my number.
#12
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UOA 98 Max, 56K on the engine, 6-months (May thru Oct) 8500 mi on AMSOIL 0w-30, south Texas heat, zero oil consumption: Iron 6 ppm, lead 11 ppm, chromium 1, viscosity @ 100 deg C = 11.2 (range 9.3 to 12.5), 28 mpg avg.
#13
Originally Posted by talkinghorse
UOA 98 Max, 56K on the engine, 6-months (May thru Oct) 8500 mi on AMSOIL 0w-30, south Texas heat, zero oil consumption: Iron 6 ppm, lead 11 ppm, chromium 1, viscosity @ 100 deg C = 11.2 (range 9.3 to 12.5), 28 mpg avg.
In order to justify buying the premium 0w-30, it would need to be run up to 15k miles.
#14
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Originally Posted by johnny2kgle
That is an excellent UOA. The S2k 0w-30 could have gone twice that far with the use of lube control and fuel power. Although the Amsoil 0w-30 is one of the best oils on the market, it cannot absorb fuel the way it used to because the natural solvency of gasoline was removed by EPA mandates. On 10k+ runs, the insolubles go up and it can thicken out of grade.
In order to justify buying the premium 0w-30, it would need to be run up to 15k miles.
In order to justify buying the premium 0w-30, it would need to be run up to 15k miles.
#16
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Originally Posted by johnny2kgle
talkinghorse,
Are you using the Amsoil SDF 20 filter?
Are you using the Amsoil SDF 20 filter?
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