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Discussion Starter · #1 ·
It's a 3/17 build with 1500 miles on it. Came home from work (about 20 miles with the last few being canyon bombing, pedal to the metal kind of thing) and the oil smelled strongly of gas. Since then I've driven 3 trips taking it easy and letting the car warm up before even driving and it's MUCH less strong, although it still smells a bit of gas. I know this is a fairly common thing in turboed BMWs, for example. Has anyone had it in an FS and did it indicate a problem? Should I only push the car hard after a REALLY long warm up?
 

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Hmm, perhaps I should have done some research BEFORE posting this :) Anyway, it turns out that GDI engines have a problem with unburnt fuel washing down the cylinder walls (which is much more likely the reason vs a bad high pressure fuel pump seal at 1500 miles), and perhaps Ecoboost engines more than others? The secondary injectors in the intakes of the new F150 2.7 are supposed to help address some of these problems, but I digress.

Anyway, apparently it's common for a fairly strong fuel odor when the engine is pushed hard, what I have to do is check for oil "growth", where fuel dilutes the oil enough to cause the level to rise.

My first experience with GDI engines was the Mazdaspeed6 and this wasn't a problem with that engine. For those a catch can was completely optional, and I know there's at least one guy with a 3.5l truck that put on 320,000 trouble free miles. Just wondering if a catch can is a necessity for a car that I'm going to push hard for 100k miles or more? If so, has anyone successfully had one installed yet?
 

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Just wondering if a catch can is a necessity for a car that I'm going to push hard for 100k miles or more? If so, has anyone successfully had one installed yet?
There are two threads already existing about catch cans.
 

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Yup, but no "I had X catch can installed by Y" posts I can see yet? If you found one, I'd love to see the link...
yes, you are correct, because there aren't any that have been developed for our car, which is said in the other threads.
 

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DI engines will always have a fuel smell to their oil, especially if pushed hard or driven short distances with minimal warmup of the oil. This is why using a quality oil and changing it on time is so important. I will follow a server service interval for changing my oils and other lubricating fluids. I consider it cheap insurance for a healthy vehicle.

I can not see how going the 10K miles when following the normal service interval could possibly work given how much fun it is to dive into the boost.
 
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