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Old 03-21-2001, 10:26 AM   #1
Scooby Newbie
Member#: 4653
Join Date: Mar 2001
Location: Los Angeles, California
Question Can we use synthetic oil for WRX?

Just wonder if we can use the synthetic oil for WRX? Any idea? I remember before the RX7 turbo's manual indicated that can't use synthetic oil at all.
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Old 03-21-2001, 10:32 AM   #2
Scooby Specialist
Member#: 1838
Join Date: Jul 2000
Chapter/Region: NWIC
Location: WA
2000 Impreza RS BRP
Vishnu Turbo/Tec3


There are turbo formulated synthetics Like AMSOil 10w-30 but some turbos burn synthetics.
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Old 03-21-2001, 10:32 AM   #3
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Member#: 4339
Join Date: Feb 2001
Location: riverside,ca

sure you can. just wait till your first or second oil change to use it. or longer if you want.

rx-7's don't like you to use synthetic because the engine is a rotary. my friend with his rx-7 still uses synthetic anyway. not the greatest idea tho.

[This message has been edited by sean_mcgrath (edited March 21, 2001).]
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Old 03-21-2001, 10:36 AM   #4
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Member#: 3139
Join Date: Dec 2000
Chapter/Region: RMIC
Location: SLC Utah
2001 Dodge Pikumup
& 08 Triumph Speed Triple


Rotary+synthetic=bad. A rotary naturaly burns oil. If it dosent completely get burned it ends up gooing up the apex seals, and in the exhaust. If he still has a cat, it is most likely clogged.


P.S. to get back to subject i like Mobile 1. Synthetic is perfect for turbo cars, piston motored cars for that matter.

[This message has been edited by scoobiejosh (edited March 21, 2001).]
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Old 03-21-2001, 02:03 PM   #5
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Join Date: Jan 2001
Chapter/Region: MWSOC
Location: SouthEast Michigan
07 Mustang GT
Ford Crappy Paint White


My dealer said if I want synthetic, just take it to the dealer and ask for it. otherwise the dealership will put in premium (dino/synth blend)
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Old 03-21-2001, 02:54 PM   #6
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Member#: 1626
Join Date: Jun 2000
Location: Cincinnati, Planet Mongo
'02 RevLab 11.5:1
Platinum Silver


I've read that the Corvette, and the Porsche 911 both come with Mobil-1 synth-oil. I understand that some synthetics come with the same ingredient (as dino oil)which helps gaskets to seal. My dealer told me I could use it straight away, and that Subaru only insists the oil filter be changed every 3k miles. No Problem. So when mine gets here, it won't see 30 miles before it sees it's first oil change.
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Old 03-21-2001, 03:22 PM   #7
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Member#: 4261
Join Date: Feb 2001
Chapter/Region: SCIC
Location: san diego
2000 2.5 RSTI


you might want to wait. using dino allows the oil to penetrate into the metal. the synth is so slick it never does. wait one or two changes before going synth. somebody locally put synth in both engine and tranny new. he had the tranny rebuilt 2 times before replacing it with a used one, that wasnt running synth and has had no problems.

[This message has been edited by p7r4e7y (edited March 21, 2001).]
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Old 03-21-2001, 03:35 PM   #8
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Member#: 4649
Join Date: Mar 2001
Location: Edmonton,Alberta,Canada
2002 WRX
'88 323 GTX


I have heard says that you should avoid Synthetic during breakin...

As far as running it in a Turbo car it is a Good thing.

Not only dose the Turbo ( which spin's at something like 25,000 rpm) break down normal oils quicker. The "cokeing" of oil on the turbo bearings ( the reason for cool down) is avoided or non existant with synthetic oil ..

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Old 03-21-2001, 04:59 PM   #9
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Member#: 3773
Join Date: Jan 2001
2002 WRX Sedan
2006 Outback 3.0R


Synthetic oil is a good idea, particularly in a turbo motor. The very first synthetics had problems with leaking because they didn't cause the seals to swell but that has been corrected long ago. Most synthetics actually have an affinity for hot metal and cling to it while petroleums quickly run off. There is really no down side to synthetic use other than the cost.
I would personally wait until after break-in before switching, otherwise break-in might take much longer.
Synthetics aren't a miracle product but they do give you an extra degree of protection.
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