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Old 05-26-2013, 01:02 PM   #21
hixsonaf
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The Dealer does my oil changes. I bought the maintenance package when the car was new so I just let them deal with it. So to answer your question my car has only ever seen motorcraft filters and motorcraft oil. No serious performance mods to require any special oil.
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Old 05-26-2013, 02:21 PM   #22
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Again it's nothing about "performance" oil as it is the proper oil. I'd be curious to find out if the dealer uses THE oil that the factory specifies, or if they just use a bulk tank and say "well it's the right weight." I'll leave the rest for another thread, but I still wonder if these are problems that will later be discovered the wrong oil was the cause. One 0w-20 can have completely different properties over another of the same labeled "weight." Dealerships are supposed to use only the recommended oil, but historically they haven't and it has led to very early engine failure.

Thanks for answering my question though.
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Old 05-26-2013, 03:23 PM   #23
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Angry

I just KNEW the "sky is falling" contingent would try to chime in thinking the modifications caused the engine to blow. Read the op's original post! A faulty injector was not caused by a CAI and/or exhaust. If you do not know better than that, then don't chime in.

New engines let go all the time and not just on Foci, and some stock and some modified. Lots of variables, and nothing is foolproof or bulletproof.

Plus, his post is odd. First he mentions a melted piston (ie lean), then says Ford diagnosed the issue as a hydraulic'd cyl with bent valves, etc. caused by a hanging injector (hung open). I guess it could have stuck closed first (leaned out), then came on and stuck on. Hmmmmm.
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Old 05-26-2013, 03:25 PM   #24
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Old 05-26-2013, 03:42 PM   #25
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I really don't see how the oil could have caused any problems as long as there is the correct amount in the engine. Many cars of all ages are running non oem spec oil of the correct weight or not, and would not end up causing a problem. The only fluids that seem to have any problems are for trans and coolant.

I bet the dealer itself might not know the exact cause of the failure, only what did. I imagine ford will examine it later and keep a log to see if there is a common problem.
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Old 05-26-2013, 07:32 PM   #26
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Quote:
Originally Posted by dyn085 View Post

Well. It gets old fast. Everything MK3 on this site becomes a doomsayers convention over night.
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Old 05-26-2013, 07:37 PM   #27
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Originally Posted by electricbeach View Post
Mines rather ticky outside of the car as well. I believe it's the direct injection because the injectors are operating at a higher psi than normal fuel injectors.

Start up and listen to a new SkyActive Mazda 3. Sounds like the rods are going to come through the block and the valve train is giong to implode. Even at full operation temp they sound like a 200k clunker. The owners manual even warns you about the noise. Some of it is DI related, with a CAI they are REALLY loud, but the rest is the thin block, etc used to save weight.

Our little engine is as quiet as a library in comparison.
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Old 05-26-2013, 09:14 PM   #28
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Quote:
Originally Posted by Juicedz View Post
This makes me more skeptical about engine longevity with aftermarket modifications on the already lean stock tune...
Quote:
Originally Posted by StingRay View Post
How do you guys know the engine is running lean? When I had my SE I'd monitor the factory Wideband and during a WOT pull AFRs would be around 12.5:1, right where they're supposed to be on a DI engine.
+1
I keep seeing people suggest that this engine runs lean, but the dyno's with wideband readings in the MK3 dyno thread suggest that the car runs on the rich side. Where does this belief that the Mk3 runs lean come from? Maybe the target AFR during partial throttle open loop fueling is above stoich?
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Old 05-26-2013, 09:29 PM   #29
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Quote:
Originally Posted by TORQUERULES View Post
Well. It gets old fast. Everything MK3 on this site becomes a doomsayers convention over night.
It's been like that the entire time that there has been a Mk3 section. The doomsayers and the anti-doomsayers keep it this way. There are a large section of common-sense'rs in the middle, but inevitably one of the other groups blow up threads into something that they aren't.

With the exception if the fuel nozzle thread. That is just intense from the moment it hits your lips. And anything DCT related. Or in regards to suspension clunk. Or...
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Old 05-26-2013, 09:34 PM   #30
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Im amazed hearing about these engines going out like this even with mine modified and autox used i have run into no problem and im at 50k but maybe something i need to watch for
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