Been dumping a can of Seafoam in all of my vehicals in a full tank of gas every 5,000 miles. PCV is the culprit with fuel injectors sure leaves a mess on the surfaces affecting the fuel spray. Also a chain reaction, carbon builds up on the piston ring, even more blowby, carbon is already a 125 year old problem.
Nothing mentioned about the spark plugs, still clean them every 15K and replace them every 45 K miles with a walnut shell blaster. Again highly conductive carbon building up on that center electrode ceramic insulator, providing a direct short to ground.
Really no definitions on what top tier gas is, only use this stuff, but still has carbon in it, carbon is the problem.
Nothing mentioned about the spark plugs, still clean them every 15K and replace them every 45 K miles with a walnut shell blaster. Again highly conductive carbon building up on that center electrode ceramic insulator, providing a direct short to ground.
Really no definitions on what top tier gas is, only use this stuff, but still has carbon in it, carbon is the problem.
