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Old 10-21-2007, 12:08 AM   #1
jal723
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At the Track German Castrol For Track Events?

After having read hundreds of thread on GC 0w30, seems like no one has really talked about using this oil for auto X / track events.

Just wondering if this oil is suitable for this type of use in an 04 STi?

Or should I use oil that is more race oriented? (Motul 300V)
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Last edited by jal723; 10-21-2007 at 12:19 AM.
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Old 10-21-2007, 03:28 AM   #2
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personally i use a 15w40 in my wrx during track events. even a thick 30 weight oil like german castrol seems too thin for me to use at the track. the owners manual suggests something thicker than a 30 weight oil for 'severe' service and i think the track counts as severe service
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Old 10-21-2007, 03:35 PM   #3
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I use GC 0w30 and autox somewhat regularly without any problems. I ended up using Shell Rotella-T 5w40 when I went to a track day and had no problems with it.
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Old 10-21-2007, 03:56 PM   #4
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I wouldn't recommend Rotella T without a disclaimer about it being suited for people WITHOUT catalytic converters. The Zinc and Phosphorous levels in that oil could poison the cats from what I've read on Bitog.

I saw some GC stocked at my local Autozone yesterday. It was $6.19 a quart!!! I'd rather pay a dollar more and get Redline 10w40 which is what I'm running right now.

I dunno, just the thought of running hard on a 30wt doesn't sound good to me. I may be wrong though.
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Old 10-21-2007, 04:24 PM   #5
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Quote:
Originally Posted by skydes View Post
I wouldn't recommend Rotella T without a disclaimer about it being suited for people WITHOUT catalytic converters. The Zinc and Phosphorous levels in that oil could poison the cats from what I've read on Bitog.

I saw some GC stocked at my local Autozone yesterday. It was $6.19 a quart!!! I'd rather pay a dollar more and get Redline 10w40 which is what I'm running right now.

I dunno, just the thought of running hard on a 30wt doesn't sound good to me. I may be wrong though.
doh. I forgot to mention that . You are correct about it degrading the cats. GC 0w30 is closer to a 5w40 from what I've read.
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Old 10-21-2007, 04:32 PM   #6
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I am choosing beteen the German Castrol 0w30 and the Motul 300V 5w40.

Should I go with the Motul 300V 5w40 for the track event then?
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Old 10-21-2007, 04:53 PM   #7
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Here's an old UOA on green GC of an STi with 45 drag passes. The uoa is no longer there but you can see the comments.

The green GC is the orginal formulation that bitog members raised several hundred dollars to pay for an "uber" analysis on it by Terry Dyson.

I don't recall any track uoa's but you may find one with a search on bitog. Go with the 5W40 if you're a little nervous or post on bitog (especially for the track).

-Dennis
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Old 10-21-2007, 05:17 PM   #8
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Quote:
Originally Posted by jal723 View Post
I am choosing beteen the German Castrol 0w30 and the Motul 300V 5w40.

Should I go with the Motul 300V 5w40 for the track event then?
I dont think you are going to lose either way...
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Old 10-21-2007, 05:26 PM   #9
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jal there are other good choices. Motul 300V is top of the line but it is also extemely expensive ($10+ a liter). There are other choices such as Redline, Liqui (Lubro) Moly, Elf NF, Pennzoil Plat Euro Formula, etc.
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Old 10-21-2007, 08:25 PM   #10
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For the price of 300V, buy one of Renewable Lube's HD formulations instead.
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Old 10-21-2007, 10:57 PM   #11
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Renewable Lubes stuff is getting raves on bitog, especially for engines that beat the crap out of oil like the Audi RS4 and the BMW twin turbo'd 335.
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Old 10-22-2007, 01:06 AM   #12
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Here's my GC UOA for a 2.0 WRX.
Copper was elevated but nothing alarming. Consumption went up from the track events, but I've had consumption with other oils.
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Old 10-22-2007, 02:23 AM   #13
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Renewable Lubes 5w40 HD isn't priced so bad on it's own. But when you add in shipping then the price is ridiculous.

Last edited by skydes; 10-23-2007 at 11:50 PM.
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Old 10-22-2007, 09:32 PM   #14
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What I was saying was that if you're prepared to spend $10-$12/qt on 300V (and don't forget to add either shipping or sales tax or both for it, too), then the very small potential incremental increase for the RLI product is an outstanding value for the relative performance. Also, remember that RLI makes more HD formulation oils than just the 5W40.
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Old 10-22-2007, 09:58 PM   #15
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Quote:
Originally Posted by skydes View Post
I wouldn't recommend Rotella T without a disclaimer about it being suited for people WITHOUT catalytic converters. The Zinc and Phosphorous levels in that oil could poison the cats from what I've read on Bitog.
for what its worth i have been using 'diesel' oils in my wrx for some time now and i passed CA sniffer test just fine ('02 wrx with stock cat)

oil is there to lubricate and protect the engine not keep the cats happy or help improve fuel economy...
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Old 10-22-2007, 10:50 PM   #16
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Quote:
Originally Posted by nicknaz View Post
oil is there to lubricate and protect the engine not keep the cats happy or help improve fuel economy...
thats a ****ing retarded statement
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Old 10-23-2007, 01:36 AM   #17
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Quote:
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thats a ****ing retarded statement
and why exactly is that? you think oil should prioritize something other than engine protection?
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Old 10-23-2007, 09:05 AM   #18
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Someone, please forgive my ignorance on this, but how does one know german castrol from anything else? and what's the big difference?

Could someone maybe link me to the proper info... I see so much about it and when one searches for it, there is soooo much crap to sort through...

Please PM, I don't want this to get lost in the mix...

Drop some knowledge for me please... I'm running a RS with a semi-built WRX swap and i want to keep her HAPPY, the previous owner was running Mobile 1 and FRAM filters

I know ALL about FRAM garbage and the not so nice Mobile 1... It's only been a month i've owned it and maybe 1500mi, so i'm planning an early oil change, and i'd like to used the "good stuff"

Thanks,
Aaron
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Old 10-23-2007, 10:18 AM   #19
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The short version is that it's Castrol Syntec 0W30 Euro Formula, Made in Germany and only available (in the U.S.) at Autozone. At operating temp, it's a thick 30 weight and is very shear stable.

It meets VW, Audi and BMW specs that only a handful of xW30's in N. America meet and it is not Energy Conserving. It has a higher level of anti-wear additives than the current EC oils. This GC FAQ on bitog was written by nasioc member FD777.

-Dennis

Last edited by bluesubie; 10-23-2007 at 10:29 AM.
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Old 10-24-2007, 12:04 AM   #20
skydes
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I'd like to see viscosity comparisons of GC vs. other 40wt oils at operating temps.

What is the HTHS number on GC?
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Old 10-24-2007, 12:31 AM   #21
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Quote:
Originally Posted by nicknaz View Post
and why exactly is that? you think oil should prioritize something other than engine protection?
so you don't care about the side effects of any drugs you take so long as it cures what you took it for?
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Old 10-24-2007, 12:54 AM   #22
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Quote:
Originally Posted by skydes View Post
I'd like to see viscosity comparisons of GC vs. other 40wt oils at operating temps.

What is the HTHS number on GC?
12.1 cSt @ 100c, but operating temps vary for different cars and driving conditions. Not to mention operating temps vary in different parts of the engine.
Here's a list - page 5 has a nice table.

HTHS is at least 3.5 cSt @ 150c from the ACEA A3 spec. I recall some bitogers doing an independent lab test and finding it at 3.45.

And thanks Dennis for posting up the FAQ
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Old 10-24-2007, 10:02 AM   #23
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Actually, you should search here and the 2.5/2.0 forums (and bitog) for Syntec 10W40 UOA's. In a lot of cases, the used 10W40 shears to a thinner viscosity than GC does. Even though an oil my start at a higher vis and HTHS, it may still shear more than GC. It's all about magic and elves.

-Dennis
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Old 10-25-2007, 06:10 AM   #24
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Quote:
Originally Posted by prometheum View Post
so you don't care about the side effects of any drugs you take so long as it cures what you took it for?
Well I think that depends on the primary illness. For instance, if you were taking a drug to combat cancer and the side effect was nausea, hair loss, etc., the benefits clearly outweigh the risks. All drugs have side effects, but if they didn't outweigh the risks would the FDA approve them?
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Old 10-25-2007, 09:58 AM   #25
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Quote:
Originally Posted by home13oy75 View Post
Well I think that depends on the primary illness. For instance, if you were taking a drug to combat cancer and the side effect was nausea, hair loss, etc., the benefits clearly outweigh the risks. All drugs have side effects, but if they didn't outweigh the risks would the FDA approve them?
I don't know, but I hear ads on TV talking about liver failure as a rare but potential side effect of drugs trying to cure things a whole lot less serious than liver failure.

I believe the previous point was that focusing only on a single element is foolish. From what you're saying here, it looks like you agree.
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