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Clarification, it's not the PSI, it's the air flow, but I agree, with the CX5, the N/A and turbo use the same air filter, so you'll pull in more debris with the turbo due to the potentially higher air flow (really depends on how you drive). Jumping on my soapbox.....changing filter too often is...

I agree. I think the "hyper grounding" tagline would be closer to "May restore the 2mpg and 8hp you lost over the many miles/years due to corrosion and breakdown of the factory wiring, but first just try cleaning all your ground terminals." Regardless of which vehicle, if manufactures could...

I agree with madar, it could just be a very thin layer of rust on the rotor that only takes a couple turns to wipe away. As for the axle idea, I was thinking maybe there was something contacting that wore away after a few rotations. Off the wall example would be a part number tag on the axle...

Premium gas - if manufacturer recommends or requires, yes, otherwise, meh. Air Filter - Why would you change the air filter so often? I sure hope the argument is not to keep the air clean.

If your first question is if inside your engine is too clean, I would say if you've done regular oil changes, looks normal to me. How long after shutting engine off are you checking dipstick? I know if I check too soon on my vehicles, there is some oil that splashes/wicks up the dipstick tube...

Got a video? Without hearing it, it does seem like maybe some light rust on the rotors, but since you state it sounds different, not sure what else. Maybe something rubbing on an axle or driveshaft? Just throwing out ideas.

I'm trying to figure out how to state this nicely but I'm not sure how someone can say the 2.5NA Skyactive is similar to the C8 V8. Skyactive: 2.5L, 4 cylinder, DOHC, 13:1 compression C8 V8: 6.2L, 8 cylinder, Pushrod, 11.5:1 compression I have much more to state, but don't want to get banned.

I do believe engines in today's vehicles may take some advantage to higher than recommended/required minimum octane, but any increase in MPG (topic of this thread) will not offset the increased cost unless something else is wrong with the engine. My detailed MPG tracking has shown no MPG...

I'm quoting my own post to clarify. I do not agree that you need oil to be at full operating temp before driving the vehicle gently. I do agree that it should be at operating temp before you really start ragging on the engine and that goes for any engine really. Also, just because the coolant...

1. Incorrect - CX5 (Skyactive in general) does not require premium. His statement is that if your car requires premium, use it otherwise engine damage could occur. 2. Technically all engines burn some oil 3. Debatable - what does it mean to last as long? Internal engine, bearings, rings...

I usually don't bump older threads, but any word from the OP on root cause/resolution?

I agree, double check recirculation is not on. Also, AC is automatically ON if you have only the floor vents on or any configuration with the windshield vent on (even if the AC light is not on), however, there is a lower ambient temperature limit which the AC does not turn on. Not all vehicles...

I don't have any good input, but watched the video and noticed the clunk looks to happen after the vehicle is fully stopped. Also, the clunk sounds more like sheet metal popping, more of a hollow sound (if that makes sense). If you stop very gradually, does it still pop?

With most factory drive modes, 98% sure the throttle mapping differences is just the relation between pedal and throttle body, plus transmission shift changes, not actual changes to the timing/fuel mapping. I'm sure there are some vehicles that actually change the engine tune with drive modes...

Sounds like you have a piece of debris that you can blow away from the drain, but as it collects water, that debris makes its way back to the drain and plugs it. Not sure if you can get inside there without removing the HVAC 'box'. Maybe you can remove the fan and get access?

I'd be surprised if you washed down the cylinders enough to prevent it from starting. At least I'm interpreting it as the cylinders were washed of oil and now the rings don't seal because of excess wear. Just to be clear, it cranks over strong, just doesn't want to start, correct? If so, have...

I have Torque Pro and I don't think it has the ability to put vehicle into maintenance mode or cycle ABS, but I haven't looked at that closely. With my 2 newer Fords use Forscan, which can do all that (and more).

Another point in the cart CarpeDiem posted. Notice the Mahle new vs. used. Used, even just 10% used, will capture more particles than a new filter. When a mechanic shows you a 'dirty' filter and tells you it should be changed to protect the engine, just smile and nod and say no thanks. That...

I had to laugh at that. First 2 bullets = money grab Last bullet, I agree, that makes no sense. How does under inflated tire cause a false TPMS alarm?

My opinion, it's a 'money grab' more than anything. Sure it may have more consistent pressures and may not lose as much air over time, but I don't think the cost outweighs the benefit. Also, what if one tire is low and you need to add air? Either you fill it up with normal air, or you have to go...