The SkyActiv-X is also supercharged, although the function of this supercharger is to ram as much air possible to maintain a very lean air-fuel ratio (more air, less fuel). The lean air-fuel ratio helps to prevent knocking in the high compression design engine. So there you have it, that is what’s special about the Mazda SkyActiv gasolin engines.
When you say it’s the CX-5, it has both 2.5L with CD and 2.5T, but when it’s the CX-9, it’s only the 2.5T. The cylinder head assembly is deferent between these two engines. Based on the very recent TSB 01-013/21 for coolant leak on the 2.5T, the leak happens at the cylinder head around the exhaust manifold.TalonTsi90. I drove an '18 for 1000ish miles and only put 87 in it since it was a loaner and it was pretty powerful. Now, ive been running 93 in my 3 for about a year now and after 3 full tanks, something lit up and the car started responding a lot more than it did. I thought it might be a fluke, but one tank of 87 reduced that gain and on the