Thoughts on Castrol 0W-30 (German) vs M10-30 (EP)

Davidwrx · 06-21-2007, 01:32 PM

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.

* Registered users of the site do not see these ads.

bluesubie · 06-21-2007, 01:44 PM

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

Metallrulz · 06-21-2007, 01:44 PM

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.

bluesubie · 06-21-2007, 01:48 PM

Quote:

Originally Posted by Metallrulz

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

Davidwrx · 06-21-2007, 01:54 PM

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.

FD777 · 06-21-2007, 02:15 PM

Thin Oil Myth

bzbuzz · 06-21-2007, 02:16 PM

check this out
http://forums.nasioc.com/forums/show....php?t=1253631

Davidwrx · 06-22-2007, 08:45 AM

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?

bluesubie · 06-22-2007, 08:58 AM

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

mikeythejew · 06-22-2007, 09:54 PM

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.

Uncle Scotty · 06-23-2007, 12:10 AM

Quote:

Originally Posted by mikeythejew

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'....

06-21-2007, 01:32 PM	#1
Davidwrx Scooby Newbie Member#: 141028 Join Date: Feb 2007 Location: Atlanta, GA Vehicle: 2002 WRX Wagon WRB	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. * Registered users of the site do not see these ads.

06-21-2007, 01:44 PM	#2
bluesubie Scooby Guru Member#: 767 Join Date: Jan 2000 Chapter/Region: Tri-State Location: N.J. Vehicle: 04 FXT	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 01:55 PM.

06-22-2007, 08:58 AM	#9
bluesubie Scooby Guru Member#: 767 Join Date: Jan 2000 Chapter/Region: Tri-State Location: N.J. Vehicle: 04 FXT	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 09:13 AM.

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06-21-2007, 01:44 PM	#3
Metallrulz Scooby Newbie Member#: 100148 Join Date: Nov 2005 Chapter/Region: Tri-State Location: South Jersey Vehicle: 2003 WRX Wagon Silver	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.

06-21-2007, 01:54 PM	#5
Davidwrx Scooby Newbie Member#: 141028 Join Date: Feb 2007 Location: Atlanta, GA Vehicle: 2002 WRX Wagon WRB	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.

06-21-2007, 02:15 PM	#6
FD777 Scooby Newbie Member#: 84820 Join Date: Apr 2005 Chapter/Region: BAIC Location: Santa Clara/Sunnyvale, CA Vehicle: 2005 WRX Sedan Crystal Gray	Thin Oil Myth

06-21-2007, 02:16 PM	#7
bzbuzz Scooby Specialist Member#: 116052 Join Date: May 2006 Chapter/Region: MWSOC Location: IL 수바루! Vehicle: 2011 STI WRB	check this out http://forums.nasioc.com/forums/show....php?t=1253631

06-22-2007, 08:45 AM	#8
Davidwrx Scooby Newbie Member#: 141028 Join Date: Feb 2007 Location: Atlanta, GA Vehicle: 2002 WRX Wagon WRB	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?

06-22-2007, 09:54 PM	#10
mikeythejew Scooby Specialist Member#: 141672 Join Date: Feb 2007 Vehicle: 07' wrx Uncle Scotty 5W30	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.