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So an Update for everyone. Same OP but different account. Intake valves were filthy, not quite VW bad, but after 60k they had their fair share of build up. That being said, I cleaned them and saw a bit of an uptick in mileage but it soon fell again. Checked my ATF fluid and it looked rather...

So an Update for everyone. Intake valves were filthy, not quite VW bad, but after 60k they had their fair share of build up. That being said, I cleaned them and saw a bit of an uptick in mileage but it soon fell again. Checked my ATF fluid and it looked rather dark so I changed that, (I had...

I mean I agree completely, I do regular oil changes at 7,500 miles with either Castrol Edge, or Mazda 0w-20 I've replaced air filters, brakes, both differential oils, transmission fluid and filter, and cleaned the MAF, new spark plugs, etc... was putting off taking off the manifold but it was...

60,000 miles, and I've done EVERYTHING

So I originally posted here a while back complaining about my 2017 CX-5 having poor fuel efficiency. Well today I think I finally solved the issue. Long Story short, Carbon Clogged Intake Valves. Yesterday I removed the intake manifold ( about a 20min job) and inspected my valves... GROSS...