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Old Jul 31, 2005 | 02:25 PM
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Question Vauxhall / GM Oil

My local garage swears by the stuff and are recommending 10w40 Semi Synth for a MY03 WRX. What do you think? Anyone know who makes it for them?
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Old Jul 31, 2005 | 04:28 PM
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That is probably because they only pay 2 squid a gallon for the stuff. Why do they recommend it? What evidence/tests have they got or completed when using the stuff in a scoob? How many scoobs have they serviced?
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Old Jul 31, 2005 | 04:48 PM
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Don't do it!
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Old Jul 31, 2005 | 04:57 PM
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My local Vauxhall dealer uses Mobil 1, i think their normal oil is also mobil 1, and the 10w40 semi synthetic is standard across the Subaru range, including the turbo cars.

Tony
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Old Jul 31, 2005 | 05:02 PM
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AFAIK, the GM oil is actually a re-branded Comma product.

I wouldn't even put it in my 2L 16v Vauxhall engine, let alone the Subaru.

IMO, you are better off going with Motul 300v, Silkolene or a similar Fully Synthetic oil.

Have a search on here - there's loads of info.
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Old Jul 31, 2005 | 07:05 PM
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Silkolene, mmmm yummy
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Old Jul 31, 2005 | 09:30 PM
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Originally Posted by fiestaboy
AFAIK, the GM oil is actually a re-branded Comma product.

I wouldn't even put it in my 2L 16v Vauxhall engine, let alone the Subaru.

.
Mr Lewis will be along soon to tell you how good it is?
There was a thread some time ago regarding this oil and who makes it. If a major manufacturer endorses it, it can't be complete crap!
JohnD
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Old Jul 31, 2005 | 11:23 PM
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I'll give it a whirl. They've a good reputation and do plenty of jap stuff (Gti-r's, gto's, supra's etc.) I give it a good run in the early hours when noones looking but no track days and I'll be changing the oil every 3-4000 miles anyway so should be ok. I've never heard of Comma but surely it must meet the standards? If it is Mobil 1 then happy days! I don't know if the cars been run on fully synth it's whole life so would rather use semi (feel free to correct me!) Good to know 10w40 is standard and as JohnD says "If a major manufacturer endorses it, it can't be complete crap!"
Cheers for the replies.
Warthog
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Old Jul 31, 2005 | 11:46 PM
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IIRC isn't vauxhall specification oil (General motors actuall have their own oil spec like VW and Merc) extended drain interval stuff capeable of withstanding 18months and 20000miles without changing (even the Astra Turbo )? If that is so, it is in effect better than your standard semi-synth oils that Subaru specify (think about it )

Anyhoo, I'm sure it's 5w-30, which on a newage (2000 onwards) Impreza is OK, but I'd plump for something that is abit thicker when hot (5w-40 or a 10w-40) especially if you like to "use" your car

Last edited by ALi-B; Jul 31, 2005 at 11:52 PM.
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Old Aug 2, 2005 | 10:02 AM
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Very cheap and large margins for Dealers.

You can't make a decent oil for £1 per litre, it's basically a mineral oil and I wouldn't use it in a scoob personally.

I would use a 5w-40 fully synthetic in preference. Decent ones don't cost the earth these days but new engines do.

Cheers
Simon

sales@opieoils.co.uk
http://www.opieoils.co.uk/lubricants.htm
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Old Aug 3, 2005 | 01:16 AM
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rock oil do a 5w40 fully synth (a proper pro ester thingy) for about 20 squids for 4 liters.......

currently on test in a mates car, and soon to be in mine on the next oil change!
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Old Aug 3, 2005 | 11:19 AM
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Can anyone get a data sheet on the Rock Oil?

I'm intrigued to do some comparisons as it seems on the cheap side for a decent oil.

Cheers
Simon
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Old Aug 3, 2005 | 12:29 PM
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contact them through there web site.........
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