WHAT IS THE CRACK WITH ENGINE OIL????
20 September 2003, 04:03 PM
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I just happened to be having a chat with a well known engine tuner today [well known if your from the Plymouth area] about servicing the Impreza amongst other things.
We got on to the subject of these engines going bang ect and it was then that he hit me with it!
"Do not use a fully synth oil in the Impreza engine".
I nearly fell over
He then went on to say that even the suburu main dealer up the road do not recomend fully synth oil as these engines "dont like it"
I presume this bloke knows his stuff, builds alot of Vauxhall 2L 16valve lumps for compettion, rally, hill climbs ect and he does quality servicing on scoobs.
But having thought i had all the theorys rite his comments have completely thrown me
What do you guys reckon?
Im now wondering what all the dealerships in japan use/recomend?
Please fire away!
We got on to the subject of these engines going bang ect and it was then that he hit me with it!
"Do not use a fully synth oil in the Impreza engine".
I nearly fell over
He then went on to say that even the suburu main dealer up the road do not recomend fully synth oil as these engines "dont like it"
I presume this bloke knows his stuff, builds alot of Vauxhall 2L 16valve lumps for compettion, rally, hill climbs ect and he does quality servicing on scoobs.
But having thought i had all the theorys rite his comments have completely thrown me
What do you guys reckon?
Im now wondering what all the dealerships in japan use/recomend?
Please fire away!
20 September 2003, 05:31 PM
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There are good reasons not to use a full synth on a new, or nearly new engine because of a propensity to encourage bore glazing, but beyond that, there's no factual basis to suggest that these engines "don't like" full synthetic oils on a generalised basis.
Did you ask this tuner to justify his comment? As things stand, I'd suggest he's offered bum info and that he doesn't know his stuff as well as you're giving him credit for.
[Edited by greasemonkey - 9/20/2003 5:32:25 PM]
Did you ask this tuner to justify his comment? As things stand, I'd suggest he's offered bum info and that he doesn't know his stuff as well as you're giving him credit for.
[Edited by greasemonkey - 9/20/2003 5:32:25 PM]
20 September 2003, 05:37 PM
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Quote/its not wise to use fully synth oil when running in an engine /Quote
Totally agree....as there is a need for a little metal to metal contact that normal mineral oil will give you....and synthetic won't.
But as to why not use synthetic after that.....total loss.
I've just been researching this subject and spoken to a lot of oil technicians. Apart from using the wrong viscosity....which sometimes can cause probs.....there is no disadvantage to using fully synthetics.
With the Evos....the warranty states that if you any other viscosity oil other than 10w-30 is used....then the warranty will be void. This is simply cos of the better flow rate when hot.
Totally agree....as there is a need for a little metal to metal contact that normal mineral oil will give you....and synthetic won't.
But as to why not use synthetic after that.....total loss.
I've just been researching this subject and spoken to a lot of oil technicians. Apart from using the wrong viscosity....which sometimes can cause probs.....there is no disadvantage to using fully synthetics.
With the Evos....the warranty states that if you any other viscosity oil other than 10w-30 is used....then the warranty will be void. This is simply cos of the better flow rate when hot.
20 September 2003, 08:42 PM
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mmm, very valid comments GM and god knows where he got his info from. I now know that i should have asked him to substantiate these claims.
Most people in the world must run these engines with a fully synth oil after all.
The one thing that he did say was and i quote.
Fully synth oils are too thin for them.
This is abit of a strange statement as we all know that the only thing that makes an oil to thin is its viscosity rating, not weather its a synthetic oil or semi synthetic oil.
Strange..........
Most people in the world must run these engines with a fully synth oil after all.
The one thing that he did say was and i quote.
Fully synth oils are too thin for them.
This is abit of a strange statement as we all know that the only thing that makes an oil to thin is its viscosity rating, not weather its a synthetic oil or semi synthetic oil.
Strange..........
20 September 2003, 08:52 PM
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Exactly, that sentence alone seems to show up the flaw in his thinking. He seems to live in a world where the only full synths are 0w/30 or something. Maybe you should buy him some 15/50 Mobil 1 for his birthday! 
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20 September 2003, 09:09 PM
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Apparently yeah!
Thats the bloody trouble down here though, we're not exactly spoilt for choice. Mind you, when and if i need somthing doing on the R that i cant handle, i think il try and find somwhere else on second thoughts. 3.5 hours to cheltenham or 2.5 hours to Swindon
Thats the bloody trouble down here though, we're not exactly spoilt for choice. Mind you, when and if i need somthing doing on the R that i cant handle, i think il try and find somwhere else on second thoughts. 3.5 hours to cheltenham or 2.5 hours to Swindon
22 September 2003, 12:35 AM
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Swindon is "only" 55 mins from Plymouth when I do it ...
I know your car is quick - but that is some feat - I guess you must use a helicopter as that is an average of 174.8mph...
...as according to Autoroute it is 160.3 miles down the M4/M5 with an estimate of 2hrs 51mins!!
Rannoch
23 September 2003, 02:00 PM
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Leviathan, one of my mates runs Mr Vartannens Pro drive car in the WRC and he has always recommended using the best synth oil possible for any race/ high performance engine.
BTW did u used to be a Hoover basher????
BTW did u used to be a Hoover basher????
23 September 2003, 05:50 PM
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Bob, I gather British Airways are selling some slightly used Concordes next month. I'm sure Swindon-Plymouth would take a damn sight less than 55 minutes in one of those. Good inertial navigation too!
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