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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 07-17-2015, 04:08 PM   #15
Benschneider06
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Quote:
Originally Posted by swarb View Post
Unless he has data logs or stares at the afr gauge while driving...

The biggest factors in a blown engine at low power levels are usually-
-Tune or bad gas(which affects the tune)
-Driver/mechanic, mis-shifted, over-rev, too much/too little oil. Kept on driving when it felt funny, or just driven too hard for too long and did not watch the oil temps.
-Manufacturer, earlier model 2013's have the most problems. But if it was driven hard it would have blown a lot earlier.

Ask him what he was doing when it blew. And how long he was driving hard for. Ask him how many quarts of oil he put in, he should have it memorized @5.8quarts. This car is known to be difficult to check the oil level, maybe he just changed the oil on ramps and did not check on a level surface. Ask the right questions and the answer should present itself. People mis-shift all the time and never want to admit it.

Also does he have an oil cooler? I make one or two passes and my oil temps are already at 230f++
What tune does he have?
I'll have to ask him all that then.

He did not have an oil cooler... I have a 2013 BRZ and have not had any problems with it yet. Hopefully she stay's healthy for a long time. Just put exactly 5.8 quarts of mobile 1 in it yesterday. Oil level is on the dot.

I really wanted to tune my car but I think I'm going to stay far away from them now... not worth it...
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Old 07-17-2015, 04:10 PM   #16
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Originally Posted by DarkSunrise View Post
I'm currently using Mobil 1 0w20 EP on my car. Tracked multiple times without issue.



Yep AFR is only one part of it. Was he also monitoring for knock?
probably not.... can't you hear that anyway?
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Old 07-17-2015, 04:10 PM   #17
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Is his DI in good condition . I found it coz alot of damages in engine and I believe it is main reason for throwing rods from the engine .
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Old 07-17-2015, 04:11 PM   #18
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Its not the first Subaru engine to blow that was using Mobil 1... But its probably not the only factor.
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Old 07-17-2015, 04:13 PM   #19
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Is his DI in good condition . I found it coz alot of damages in engine and I believe it is main reason for throwing rods from the engine .
DI? Not familiar with that acronym..
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Old 07-17-2015, 04:14 PM   #20
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Originally Posted by Kostamojen View Post
Its not the first Subaru engine to blow that was using Mobil 1... But its probably not the only factor.
You don't reccomend Mobile 1? Can you explain? I thought it was top notch...
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Old 07-17-2015, 04:16 PM   #21
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Originally Posted by Benschneider06 View Post
DI? Not familiar with that acronym..
Direct injection
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Old 07-17-2015, 04:18 PM   #22
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Direct injection
Hell I'm sure he didn't/doesn't know if it was or not.
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Old 07-17-2015, 04:26 PM   #23
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What tune did he have? And how long has he had it? Or where did he get it tuned at?

The stock tune isn't that great either, I forgot what the issue was. I think it was the injector seals. Seal breaks, cylinder runs lean, boom.
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Old 07-17-2015, 04:28 PM   #24
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Does he have a lightweight crank pulley?












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Old 07-17-2015, 04:30 PM   #25
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Quote:
Originally Posted by Benschneider06 View Post
probably not.... can't you hear that anyway?
By the time you hear it knocking, most of the time it is too late. There are micro knocks which super sensitive sensors can see/hear before our human ears can even detect anything.
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Old 07-17-2015, 04:30 PM   #26
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Forget oil weight, how often was he changing it (not this most recent change, the previous changes)? Was it full (not overfull)? Is he running too rich and washing down the oil with fuel?

Make sure he sends the oil out for proper analysis.
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Old 07-17-2015, 08:48 PM   #27
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Old 07-17-2015, 09:27 PM   #28
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Quote:
Originally Posted by Benschneider06 View Post
You don't reccomend Mobile 1? Can you explain? I thought it was top notch...
It runs thin for what its supposed to be rated for, and burns out faster than the 7500 miles people try to use it for. I saw dozens of blown motors running mobil 1 when I worked at a dealership for a few years, part of it is because of issues with the oil weight but most of it comes from the owners who expect it to be bullet proof and its not because no oil is.

If you insist on Mobil 1, run 0w30 instead and change it frequently (3000 miles) especially if you abuse it.
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