I am SO done with Mobile1

[smurfwrx]

I'm am so tired of checking my oil (do it often - every fill-up or every other fill-up minimum.) and finding I'm nearly a 1/4 - 1/3 qt. low. NO blue smoke, just eating up oil as other's have complained about.

I'm not trying to trash M1 just b/c I've heard a lot of people complain about it but b/c I myself have been using it for almost a year and I'm not happy with it. I've read great things about german castrol 0w30 and my happy ass will be marching down to Autozone with high hopes of finding it today.

Let me just throw this out there, any "low" reading on my dipstick makes me panic and I'd venture to guess that's a better reaction than being all cavalier about it, but how low is low enough to be worried? Consider that it would not have been low for long, seeing as how I check it frequently and top off accordingly. I run WOT at least once a day up in the neighborhood of 6k RPM either on my way to work or on the way home, but otherwise, completely normal highway commute w/ minimal "city" driving.

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[bluesubie]

Which grade? In a modified bugeye in SC, I would use Mobil1 High Mileage 10W30 year 'round at a minimum. It's a tad thinner at operating temp than GC, but would be a better fit for you if you're running the regular 10 or 5W30. Otherwise, use their best 30 weight; 0W40.

-Dennis

[WizardGandoff]

i heard moble one is for high performance v8s like corvetts whatever. i used castrol for 90000 miles and never had a prob with anything. the first time i switched to mobile one i spun a rod bearing and seized my 2.0 liter motor last june

[smurfwrx]

^ Yeah, that's what I'm trying to avoid.

I'm stage2 right now running an OTS from Cobb. 93oct. I have further mod plans as well. My car is just eating up M1 10w30 and 5w30.

Just called Autozone. They've got 8qt. of German Castrol 0w30 w/ my name on it. Picking it up at lunch today.

Unless................... someone has other recco's? I've just been steadily hearing great things about this GC.

[pweizman]

I have an '03 stg. 2 wagon...my car uses a bit of oil too.

About .5-.75 every 3000 miles. I think it is some what normal for a WRX.

I have heard good things about Rotella also...and in general switching to a 5w40 or 10w40.

I think I am going to try Rotella 5w40 next time...

I have tried about every type of 5w30 oil...and my WRX consumes it at the same rate.

Mobil One
Synpower
Durablend
Valvoline high mileage
Castrol GTX

Patrick

[smurfwrx]

cool. Getting ready to pick up some GC 0w30 now. I'll be sure to get back to eveyone in a couple weeks w/ impressions, differences, whether or not all the freaking oil is still there!!!!!!

[sujorosa]

just curious if uve all checked ur turbos out.. my buddy has an 04 sti, EATS oil like there is no tomorrow.. finds out the turbo is leaky.

[pweizman]

Originally Posted by sujorosa

just curious if uve all checked ur turbos out.. my buddy has an 04 sti, EATS oil like there is no tomorrow.. finds out the turbo is leaky.

Changed my turbo 2000 miles ago...still the same usage.

It did fix my slight oil return line leak...but not the oil consumption.

Patrick

[sujorosa]

yea ive heard from others that Mobil1 disappears in subaru engines on top of the leaky turbo thought. have u looked into amsoil?

[jay25RS]

Mobil 1 10w-40... fixed much of the consumption issue for me...

FWIW, Mobil 1 5w-30 is thicker than their 10w-30 at temp...

Next oil change going to 15-50... warm weather is here!

[dantastic]

Originally Posted by jay25RS

Mobil 1 10w-40... fixed much of the consumption issue for me...

FWIW, Mobil 1 5w-30 is thicker than their 10w-30 at temp...

Next oil change going to 15-50... warm weather is here!

ditto. M1 10w-40 works with very little consumption for me. my motor drinks M1 5w-30. i tried castrol 10w-40 and quaker state 10w-40 synthetics, but it still consumed a little.

[Mykl]

I've had two different cars that liked to hide 5w-30 Mobil 1 in mass amounts. My old 2002 Sentra Spec-V, and the STi. On both cars, within 500 miles of an oil change, each found a way to completely hide at least a single quart of oil. I have absolutely no idea where it was going. The car didn't seem to be burning it, and it wasn't leaking. Funny thing was, after that initial loss of oil, the level would stay rock steady until it was time to change the oil again.

I switched to GC 0w-30 in the STi and I slowly use roughly a half to a single quart of oil for a 3000 mile oil change, which is perfectly acceptable.

I will never use Mobil 1 again.

[jays05]

Good luck, my suby consumed every kind of oil I tried until I finally changed over to a real air/oil separator. Including M1 5w30, 10w30, GC 0w30, Royal Purple 5w30, 10w30, 10w40, etc etc... IMO most of the consumption in subarus is because of the pcv system.

[my scoop eats babies]

Good luck, hope it works for you. I was having issues with my rex consuming M1 as well, I was filling up almost 2 quarts between oil changes. I switched to Amsoil Euro Blend 5w-40 on my last oil change. 3k miles is right around the corner and I had literally 0 consumption last I checked a few days ago.

[joebush44]

Ive also heard Mobile 1 = Oil Consumption.
Royal Purple Here

[elusiv]

From my experience, turbo cars hate synthetic oils. I will never use Royal Purple again for as long as I live.

[Redline927]

Been running Mobile1 10w-30 in my car for a long, long time with NO oil consumption problems whatsoever. I change every 3k.

2.0 wrx with about 300whp.

[DrD]

Originally Posted by elusiv

From my experience, turbo cars hate synthetic oils. I will never use Royal Purple again for as long as I live.

I don't know about that...

I have found that oil consumption sort of goes with how I am driving - the harder you push, the more that goes away. Mobil 1 (5w30 and 10w30) generally seemed to go away the fastest - Redline 10w30 sticks around longer, as does Royal purple 10w30 and 10w40 - haven't tried much else.

[bluesubie]

You folks really need to have a look around at the uoa threads here. I've run 8,000 miles on GC with good results and consumed only 1qt.

Here's a uoa on Redline 10W40 at 6,800 miles with no make-up oil added.

However, use oils like M1 xW30 and RP xw30 in a hard driven turbo and you will likely have consumption. UOA threads don't get a lot of attention here because they have facts. People would rather read threads entitled, "Oh noes, my engine assploded on Mobil1".

-Dennis

[shamrock 05]

I cant find redline, so I am going to be using Amsoil 5w-30. I have never heard anything bad about Amsoil, anyone else

[bluesubie]

Recent Amsoil thread.

-Dennis

[jnorth85]

ive run mobil1 5w30 in my sti sense the first oil change and i get no consumption on normal driving, under hard driving i will use very little.

that said i am going to try castrol 5w30 syn in my current motor.

i am also considering going to the castrol 0w30 as my car doesnt drive in teh winter. it shouldnt be a huge issue.

[smurfwrx]

I think I posted earlier in the thread about "how low is too low?"

If you check your oil and notice it's just on the tip of the dipstick (just below low dot) is it a guaranteed problem? Already doomed?

I checked mine and was down ~1/4 - 1/3 qt. yesterday and topped off. Just wondering HOW BAD that is. It couldn't have been low for long. I check it pretty regularly and was surprised to see it that low.

(no leaks, no blue smoke. I checked all that. Just consuming M1)

[bluesubie]

Originally Posted by jnorth85

that said i am going to try castrol 5w30 syn in my current motor.

i am also considering going to the castrol 0w30 as my car doesnt drive in teh winter.

Use 0W30. It's thicker at operating temp and cold temps and is a more shear stable oil. The 5W30 N. American Syntec isn't all that spectacular.

-Dennis

[BGPKR]

I'm currently using Royal Purple 5w40 and no comsumption.