Oh-Oh's, I Think I Broke It! - Page 5 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Sportsguy83 · 02-26-2013, 04:28 AM

Quote:

Originally Posted by 20valvewynn83

No I just get trained on it from corporate. And as I stated people can say what they want and do what they won't to their cars but I still think 5w30 is too heavy for this car I wouldnt go higher then 5w20 but that's me. Personally I will stay with 0w20 and run a better quality oil like eneos sustina.

It would be much welcomed if you could elaborate on what have you learned on training that leads you to conclude the oil recommendation by the Toyota/Subaru engineers who designed the car is wrong.

Pscylo · 02-26-2013, 05:36 AM

Just curious...was any of the VVTi changed prior to your modding? Or was it the stock VVTI that is known to throw CELs and has a TSB for replacement since Aug of last year?

Dave-ROR · 02-26-2013, 08:34 AM

Quote:

Originally Posted by 20valvewynn83

No I just get trained on it from corporate. And as I stated people can say what they want and do what they won't to their cars but I still think 5w30 is too heavy for this car I wouldnt go higher then 5w20 but that's me. Personally I will stay with 0w20 and run a better quality oil like eneos sustina.

As you said do whatever you want. Subaru and Toyota SUGGEST 5w-30 though for severe usage which likely means their experience (instead of book based training by a corporate trainer) matched my own data that we see low oil pressure with 0w-20, especially when warm and at high RPM. 0w-20 is great for Eco though. Based on my data alone my car will never see 0w-20 again.

brillo · 02-26-2013, 08:41 AM

Why not 0w-30 instead for better cold start protection?

Dave-ROR · 02-26-2013, 08:42 AM

Quote:

Originally Posted by brillo

Why not 0w-30 instead for better cold start protection?

That's also fine.

OrbitalEllipses · 02-26-2013, 09:06 AM

Quote:

Originally Posted by Dave-ROR

That's also fine.

Quote:

Originally Posted by brillo

Why not 0w-30 instead for better cold start protection?

In this scenario it's the second number that's more important. So as Dave said, 0W-30 is fine. My favorite oils don't come in 0W-30 though.

celica73 · 02-26-2013, 09:26 AM

Quote:

Originally Posted by brillo

Why not 0w-30 instead for better cold start protection?

Because 0W-30 generally has inferior properties (lower HTHS for example) to 5W-30.

xwd · 02-26-2013, 09:29 AM

I'm using the Motul 8100 X-Lite 0w30 which has fairly good reviews.

markitect · 02-26-2013, 09:33 AM

I hate to go there, but could you be running into oil starvation problems. I haven't heard of any problems yet, but Subarus in general are know to have problems. If you have big sticky tires all the oil might be stuck in the head.

The cam timing is adjusted by oil pressure, so if it is starting to drop they may not adjust properly. I have no idea what the required pressure is vs when the sensor reports low pressure.

Of course you should also just plain make sure the oil is full.

Sargy · 02-26-2013, 09:53 AM

Quote:

Originally Posted by dwx

The 2.5L turbo Subarus are pretty famous for cracking the ring landing on the #4 piston. I did many years ago when I had an EJ257 block in my 02 WRX. Poor tunes on the 08-09 WRX/STi models led to those failures even on stock cars. People got tunes as a reliability investment.

It's very easy to tell with a compression test. The smoking on startup happens with the cracked ringlands, here is a video:

But the codes you are getting aren't indicative of it and usually there is no associated noise/rough running until things get really bad.

Hey I know the guy that started the car! small world hahahaha.

He has a Corvette now.

OrbitalEllipses · 02-26-2013, 10:03 AM

Quote:

Originally Posted by markitect

I hate to go there, but could you be running into oil starvation problems. I haven't heard of any problems yet, but Subarus in general are know to have problems. If you have big sticky tires all the oil might be stuck in the head.

The cam timing is adjusted by oil pressure, so if it is starting to drop they may not adjust properly. I have no idea what the required pressure is vs when the sensor reports low pressure.

Of course you should also just plain make sure the oil is full.

Oil pooling in the head at high Gs, very typical Subaru problem...same with cracked ringlands. I hope neither are the case here.

Sargy · 02-26-2013, 10:08 AM

Quote:

Originally Posted by OrbitalEllipses

Oil pooling in the head at high Gs, very typical Subaru problem...same with cracked ringlands. I hope neither are the case here.

OrbitalEllipses · 02-26-2013, 10:09 AM

Quote:

Originally Posted by Sargy

And this is a 2L Subaru. 2L WRX was famous for chewing bearings.

ft_sjo · 02-26-2013, 10:20 AM

Gotta love dealership fitters pretending that they're engineers.

02-26-2013, 08:41 AM	#60
brillo Senior Member Join Date: Nov 2011 Drives: 2013 Firestorm FR-S Location: Houston Posts: 506 Thanks: 18 Thanked 77 Times in 64 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Why not 0w-30 instead for better cold start protection? __________________ 2013 Firestorm FR-S, MTX, build date 1/13.

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02-26-2013, 09:29 AM	#64
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markitect Senior Member Join Date: Jun 2011 Drives: Scion FRS Location: Michigan Posts: 216 Thanks: 17 Thanked 58 Times in 39 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I hate to go there, but could you be running into oil starvation problems. I haven't heard of any problems yet, but Subarus in general are know to have problems. If you have big sticky tires all the oil might be stuck in the head. The cam timing is adjusted by oil pressure, so if it is starting to drop they may not adjust properly. I have no idea what the required pressure is vs when the sensor reports low pressure. Of course you should also just plain make sure the oil is full.

02-26-2013, 10:20 AM	#70
ft_sjo Banned Join Date: Oct 2012 Drives: GT86 Location: The Motherland Posts: 1,398 Thanks: 140 Thanked 473 Times in 271 Posts Mentioned: 22 Post(s) Tagged: 0 Thread(s)	Gotta love dealership fitters pretending that they're engineers.

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