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Old 06-21-2007, 02:32 PM   #1
Davidwrx
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Default Thoughts on Castrol 0W-30 (German) vs M10-30 (EP)

I am currently running Moble 1 10-30 (regular blend). Based on seemingly a high number spun bearings with the realitively thin M1 5-30 and 10-30 I am considering changing to the M1 10-30 extended performance or the Castrol Syntec European blend 0-30. I am a bit nervous of running a 0-30 here in Georgia in the summer (seems thin for so hot). Any thoughts / comments.

Is there a database / spreadsheet on BITOG that compares oils? I am not a frequent visitor to that site, but thought I remembered some several years back.
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Old 06-21-2007, 02:44 PM   #2
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Scroll down to my Motul UOA below. I've used GC a lot and it always stayed in grade despite high fuel dilution (even blackstone was surprised at that) and trips to SC every July.

Check the last page of the which oils are thick or thin sticky in the PCMO forum. Remember to also look at HTHS if you want a shear stable oil.

There are only a handful of 30 weights that are as thick and shear stable as GC.

edit: Didn't see M1 10W30 EP, but here's Mobil's pdf . Just a hair thicker than regular M1 and thinner than GC at 100C.

-Dennis

Last edited by bluesubie; 06-21-2007 at 02:55 PM.
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Old 06-21-2007, 02:44 PM   #3
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Check out BITOG some more and you'll see that the German Castrol isn't any thinner, in fact it's one of the thickest 30w oils out there.

You might run into problems though because from what I've seen in the Autozones around me and on what people say on BITOG, german Castrol isn't going to be imported anymore. I wiped out my local Autozone's supply a few weeks ago and they have yet to stock it with more.
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Old 06-21-2007, 02:48 PM   #4
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Quote:
Originally Posted by Metallrulz View Post
I wiped out my local Autozone's supply a few weeks ago and they have yet to stock it with more.
Please stay out of Central NJ.

-Dennis
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Old 06-21-2007, 02:54 PM   #5
Davidwrx
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At my local autozone there are 3 quarts on the shelf. I keep checking back to see if they have gotten more in. I am thinking about calling others in the area. Guess I should get on that now.

BTW, thanks for the incredibly quick replies.
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Old 06-21-2007, 03:15 PM   #6
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Old 06-21-2007, 03:16 PM   #7
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Old 06-22-2007, 09:45 AM   #8
Davidwrx
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I've checked the 3 autozones near me and I have come up empty on the Castrol 0-30. I am wanting something that is readily available and realitively inexpensive (under $8/qt). Now I am thinking the M1 10-30 EP or the M1 0-40. Thoughts on these or any other suggestions?
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Old 06-22-2007, 09:58 AM   #9
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M1 0W40 is considered by some to be their best 30 weight because of shearing. It's probably good though. The new M1 10W30 High Mileage is also ACEA A3 rated (like GC). I would use that before the 10W30 EP. You could also consider Rotella 5W40. The folks at bitog love the diesel oils for their robust additive packs.

-Dennis

Last edited by bluesubie; 06-22-2007 at 10:13 AM.
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Old 06-22-2007, 10:54 PM   #10
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Look a little closer in your owners manual. While the viscosity is not listed, I use valvoline synpower 5w40. I know my engine wont last as long with this oil compared to mobil1 5w30. Engine oil is the constant male worry wort topic we have.
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Old 06-23-2007, 01:10 AM   #11
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Quote:
Originally Posted by mikeythejew View Post
Look a little closer in your owners manual. While the viscosity is not listed, I use valvoline synpower 5w40. I know my engine wont last as long with this oil compared to mobil1 5w30. Engine oil is the constant male worry wort topic we have.


...d0000000d...it may very well last a LOT longer using an oil better suited to the engine than that piss that everyone thinks they 'have to use'....
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