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Old 03-21-2001, 09:26 AM   #1
GameBoys
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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, 09:32 AM   #2
david2z4
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There are turbo formulated synthetics Like AMSOil 10w-30 but some turbos burn synthetics.
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Old 03-21-2001, 09:32 AM   #3
sean_mcgrath
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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, 09:36 AM   #4
scoobiejosh
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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.

Josh

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, 01:03 PM   #5
SlideWRX
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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, 01:54 PM   #6
Darryl
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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, 02:22 PM   #7
p7r4e7y
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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, 02:35 PM   #8
Wrxtasy
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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, 03:59 PM   #9
harrydog
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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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