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Old 06-26-2012, 03:26 PM   #1
nquillen
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Default BRZ recommended Oil?

The manufacture recommends 0w-20 synthetic oil, which is an odd weight.

Is the low weight oil just for gas mileage, I'm generally in favor of thicker oil for protection reasons?

What oil and weight are you planning on using?
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Old 06-26-2012, 04:41 PM   #2
Lminette
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Check out this thread over on DI. It contradicts every thing I have ever known but makes a ton of sense which inclines me to think you should stick with the OEM reco. Pay particular attention to williaty's comments.

http://www.dirtyimpreza.com/forums/s...ad.php?t=26000
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Old 06-26-2012, 05:51 PM   #3
nquillen
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Who makes Subaru brand 0w-20 synthetic oil?
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Old 06-26-2012, 06:25 PM   #4
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I plan on using 0w-30 after the break-in, mainly because I will be autocrossing the car in high temperatures. I have heard good things about Motul 8100.
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Old 06-27-2012, 12:16 PM   #5
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Quote:
Originally Posted by nquillen View Post
Who makes Subaru brand 0w-20 synthetic oil?
Idemitsu Lubricants of Japan. It's very good stuff. High viscosity index (~200), high in moly (~700ppm).

It's the same as the old Honda Genuine 0w20 and the current Mazda 0w20. The new API SN version of this oil has not yet surfaced, SN versions of other high VI, high moly oils (Toyota, Castrol Edge Ti) have shown reductions in one or both. We'll see what the SN version looks like soon I'm sure.

VOA on Bitog.
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Old 06-27-2012, 01:06 PM   #6
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Quote:
Originally Posted by Lminette View Post
Check out this thread over on DI. It contradicts every thing I have ever known but makes a ton of sense which inclines me to think you should stick with the OEM reco. Pay particular attention to williaty's comments.

http://www.dirtyimpreza.com/forums/s...ad.php?t=26000
Ty Williams is normally a very knowledgeable guy, but he's got his tech a bit crossed up in that thread. There is indeed an optimal operating viscosity for engine oil in a particular engine, but the range is pretty broad and he's missing the other motivation behind Subaru's oil grade recommendations; CAFE.

It's not just about warranty liabilities. Subaru puts the "extreme usage" language in the OM for a reason.

If you want a better idea of the best oil to use for your operating conditions, look at the weight recommendations for the BRZ in Europe and Japan, where they don't have CAFE. I'll bet other weights are specifically mentioned and 0w20 is the lightest allowed.
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Old 06-27-2012, 01:59 PM   #7
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I ordered some Motul 8100 X-Lite to use at my first oil change which will happen at 1000 miles. Also ordered a Fumoto valve to make things a little easier in the future.
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Old 06-27-2012, 02:15 PM   #8
gpshumway
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Early oil changes during break-in can actually be detrimental. The factory oil gets absolutely loaded with Moly from the assembly lube. Moly will reduce friction during break in. In your case though, it might be a good idea if you're going to Auto-X the car in the heat. I believe others have taken the car to the track on the FF, and that's much tougher on oil.

If you're going to change the oil early I'd suggest a shot of the Lubro-Moly MoS2 additive.

The UOA history for my WRX is HERE, and my Honda Civic is HERE, including 6,000 miles on the factory fill. Note the entirely unremarkable nature of the FF UOA on the Civic.

I did a "hard" break-in on the Civic. Honda specifically warns against draining the factory fill early in the owner's manual.

Last edited by gpshumway; 06-27-2012 at 02:20 PM. Reason: Added Auto-x comments
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Old 06-27-2012, 03:32 PM   #9
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I had a Fumoto valve on my Tacoma and the oil came out so slow I stopped using it.

Do you think it would be possible to suck the oil out the dipstick like a lot of the BMW guys do? Many people tested and after the vacuum process no oil would come out the drain plug.

I was actually thinking of doing a Fumoto Valve with the nipple then extracting the oil with the vacuum system.
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Old 06-27-2012, 05:59 PM   #10
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The Fumoto valves I had on my WRX and STi worked great. It seemed to drain plenty quick for me, but then again I take an hour to do a 20 minute job because I always get distracted...OOO SHINY! Helps to warm it up a bit first too.

Glad they have one for the BRZ now, it wasn't on the site last time I checked, but I was pretty sure it wasn't the f105.

I haven't dealt with this weight of oil before, but I'll likely just let the dealer take care of it since it's covered for a while.
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