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View Full Version : how long can i go with synthetic blend


2point0T
03-16-2006, 04:40 PM
the last oil change my buddy hooked me up with synthetic blend, I just wanted to know how many miles i can go on that, im not sure about what weight it was or anythign like that, i think 10w30, but not sure

347gtvert
03-16-2006, 04:58 PM
3,000 just like any other

2point0T
03-17-2006, 10:19 AM
i thought with pure synthetic u can go like 5k or something, so i assuming with a blend it might have been longer than

Intercooled T
03-17-2006, 10:29 AM
Pure/Full synthetic, change as normal, 2-3k miles, depending on how anal you are

eviltalon
03-17-2006, 10:45 AM
Pure/Full synthetic, change as normal, 2-3k miles, depending on how anal you are
:iagree: If u beat on your car, 3k is definitly 2 long.

Intercooled T
03-17-2006, 10:48 AM
Full synthetic is also like $7/quart @ NAPA, DO NOT BUY THAT CRAP

2point4DSM
03-17-2006, 10:52 AM
It really depends on how tight your motor is and how much you beat it. A worn motor is going to have a lot more blowby and overcome the protection properties of the oil sooner.

3000 miles is an average for people that drive their cars normally.

BradC
03-17-2006, 12:04 PM
Don't extend the intervals. I don't remember the exact numbers, but for motor oil to be sold and labeled as "synthetic blend", it needs a very, very low percentage of actual synthetic in it. In other words, don't buy synthetic blend.

Full synthetic is also like $7/quart @ NAPA, DO NOT BUY THAT CRAP
Are you saying synthetic oil is not worth it?

Intercooled T
03-17-2006, 12:13 PM
Full Synthetic, @ $7/quart for a regular street car, yes.

Race car? Why the hell not

[EDIT] I personally use QuakerState Synthetic Blend 10w30, of course I like synthetic blends

BradC
03-17-2006, 04:11 PM
Full Synthetic, @ $7/quart for a regular street car, yes.

Race car? Why the hell not

[EDIT] I personally use QuakerState Synthetic Blend 10w30, of course I like synthetic blends
Full synthetic is worth it (IMO of course) it stands up to high temps much, much better. Anyone with a turbo car should be running it, in my opinion. Also, I stick by blends not being worth it. There is no standard for amount of syn. stock in a blend...you are paying more for a small amount of syn. stock (and mostly not true syn.) with base stocks...
Instead of the expected 50 percent, these blends typically may contain 10 to 20 percent Group III blended with 80 to 90 percent conventionally refined base stock
YMMV

Intercooled T
03-17-2006, 04:25 PM
some is better than none :) i understand what your saying though. synthetic blends are not that much more than regular oil these days. 5 quart bottle of synthetic blend 10w30 is 10-12 bucks

HuggyBear
03-17-2006, 05:59 PM
syn blend is not really that great as its base oils are not ester based, instead they are crude based and need to be changed every 2-3K. Premium quality oils such as AMSOIL or Motul or Veruspeed oil can go for periods of 10-13K with 3k filter changes.

Standard Mobil1 and every other oil on the market does not protect to the abilities as the oils I've mentioned above.

vDevilu
03-29-2006, 05:19 PM
I am running Full Syn 5w40 Elf Oil (french) I change my oil every 10k. Full Syn is good stuff.

KrautFed20V
03-29-2006, 06:54 PM
i run AMSOIL 0w-30 have the oil analyzed @ 3000 mile intervals, i'm currently running on 12k mi and the report came back as i don't need to change yet. but i'm going to change it next week.

2point0T
03-31-2006, 10:54 PM
so 12k off of synth blend? do you driive your car hard?

EvlEgl
04-15-2006, 01:10 AM
I can't run Mentally drive my car on 12k old oil no matter what the "Report comes back"

Amsoil isn't all it's cracked up to be...the properties are better by 3 or 4 degrees when it comes to breakdown.

Mobil 1 since day 1.

S4toSTI
04-15-2006, 03:17 AM
Ok first off someone saying that 3k miles is too long is nuts second, I had a mini a few cars ago and the reccomended service interval was 10k just a fyi.

TROLL
04-15-2006, 03:21 AM
yeah 3000 is a popular number to go by but it is definitely not the rule. i have read numerous accounts from WRX owners using Mobil 1 5w-30 and a Purolator PureOne filter having great oil analysis results at 7k miles for one guy and 9k miles for the other. after reading that, I have the confidence to change my oil every 5k miles without a care in the world.

On Sale
04-15-2006, 03:53 AM
i dont change my oil, i change my filter... the oil just flows out of cracks and holes and i just pour more in, as i go along, and i put 4 quarts in every 3k miles, so no need to change ... what do u expect its a dsm.



im just kidding.

S4toSTI
04-15-2006, 09:36 AM
^^^lolololol

bastid
04-15-2006, 09:47 AM
3,000 for non-synthetic oil is perfect. With synthetic that is effing OCD. BMW recommends 15k oil changes on Castrol Syntec :screwy: . That is a little on the long side, so I change it every 5k-6k or so and it still isn't too dirty.

Intercooled T
04-15-2006, 02:53 PM
yea, but doesn't that car have a system that cleans the oil itself?

2point4DSM
04-15-2006, 03:07 PM
yea, but doesn't that car have a system that cleans the oil itself?

Besides the oil filter there are no other mechanisms that clean the oil. You must be referring to sensors that monitor the condition of the oil. Not sure BMW uses them although I could be wrong. I know Mercedes has it available on some of their cars.

bastid
04-15-2006, 03:12 PM
Not to my knowledge, but I'll try to look it up when I have some time. I could imagine 15k oil changes for something with less compression and a lower redline (non-M cars driven casually vs. spiritedly). Until BMW puts oil-cleaning fairies in there, I'm changing every 5-6k; oil and filter.

TROLL
04-15-2006, 07:57 PM
one thing i didnt notice before and dont know if anyone else did but if your buddy set you up with synthetic for the first time just now... make sure that you continue to use synthetic for the rest of the life of the motor.
its a one way door... once you start using synthetic you are not supposed to go back to dino.

2point4DSM
04-15-2006, 09:49 PM
one thing i didnt notice before and dont know if anyone else did but if your buddy set you up with synthetic for the first time just now... make sure that you continue to use synthetic for the rest of the life of the motor.
its a one way door... once you start using synthetic you are not supposed to go back to dino.

I've heard this too. And I've also heard that it doesn't matter. I forget now why you aren't suppose to switch back and forth but I do. And I've been doing it now for many years and on many different cars. I've yet to see any problems doing this on my DSM.

HuggyBear
04-17-2006, 11:15 PM
I can't run Mentally drive my car on 12k old oil no matter what the "Report comes back"

Amsoil isn't all it's cracked up to be...the properties are better by 3 or 4 degrees when it comes to breakdown.

Mobil 1 since day 1.

You need to be educated on oil then. Your statement is really ignorant.

redline
04-18-2006, 08:30 AM
You can switch back to dino without problems, I just wouldnt put synthetic in an older car it will drool all over the place. I switch my cars over to synthetic at 10,000 miles and stick to it (Ive also heard to wait to switch your car over if it didnt come with it from factory)