Who uses synthetic motor oil in their WRX?
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Joined: Nov 2002
Posts: 6
I switched to Mobil1 at approx 3,000 miles. I don't think that you would be able to notice a performance benefit. I view it more as a reliability benefit. The oil should degrade less over time. I still change the oil every 3,000 miles.
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Originally posted by Lobster Man
I would defenatly not use synthetic. Especially in the tranny, unless you want it to blow.
I would defenatly not use synthetic. Especially in the tranny, unless you want it to blow.
Why wouldn't you use Synthetic oils? And why not especially in the tranny?
I've run Castrol Syntrans 75w90 in my S4, and I use Eaton Fuller (Trucking products) 75w90 synthetic gear oil in my STi RA gearbox for over a 1 1/2 year. I've used and abused the gearbox over that period.
I opened it this summer to change the pilot shaft oil seal and looked the gears over and they looked brand new. The synchros showed a little wear, which is normal.
Both oils are API GL4 or 5 certified, so they fit the Subaru application chart...
I'm just curious why you say using synthetic products will blow up trannies.
Registered User
Joined: Nov 2002
Posts: 378
From: who wants to know?
Originally posted by evilwrx
Mobil 10w30 at 7500 miles, I change every 5000. I do lots of highway driving
Mobil 10w30 at 7500 miles, I change every 5000. I do lots of highway driving
what is with mobil-1, why is everybody running it?
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Joined: Nov 2002
Posts: 181
From: OC, CA
Car Info: 02 WRX
Originally posted by scooby5
I'm just curious why you say using synthetic products will blow up trannies.
I'm just curious why you say using synthetic products will blow up trannies.
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John,
That's a good point. Some gear oil have friction modifiers, some don't. I think Redline is one of the brand that does that.
I haven't had a problem with the Syntrans (I think it's not called Syntec gear oil) or Eaton Fuller with my synchros.
I figure though, as long as they meet the API guidelines and the viscosity's there, then it should work. Some people might have different experiences.. anyone else using synthetic gear oil?
That's a good point. Some gear oil have friction modifiers, some don't. I think Redline is one of the brand that does that.
I haven't had a problem with the Syntrans (I think it's not called Syntec gear oil) or Eaton Fuller with my synchros.
I figure though, as long as they meet the API guidelines and the viscosity's there, then it should work. Some people might have different experiences.. anyone else using synthetic gear oil?
Registered User
Joined: Nov 2002
Posts: 181
From: OC, CA
Car Info: 02 WRX
Originally posted by scooby5
Some gear oil have friction modifiers, some don't. I think Redline is one of the brand that does that.
Some gear oil have friction modifiers, some don't. I think Redline is one of the brand that does that.
