Spark plug Bosch or OEM Mazda

That is what I am running in this 1996 Corolla and my gas Mileage is better than ever! Made a huge difference in power .

For the last twenty or so years I have only used Bosch plugs. I have had great service in my VWs, Toyotas and Ford.

if not oem ACDelco get ones from the likes of ngk, or bosch.

When I had dino burner cars, I did all of my own work, and always used Bosch Platinum plugs for my specific engine and heat. Iridium last the longest life, but are more sensitive to getting hot and causing pinging.

I went with Bosch but you really can't go wrong with the 4 vendors you have listed.

Bosch Spark plugs Motul 0W-20 VW oil for the last two oil changes, about 3k miles on the current change AFE air filter Brake fluid flush within last year or so Coolant flush with VW fluid within last year or so Accessory drive belt New belly pan screws and fasteners

I am getting better MPG,but It seems a little lacking in the power dept. compared to the autolite copper I had in?!Especially as far as low end torque.

I did not have good experiences with Bosch on another vehicle.

I have solved so many drivability problems taking Bosch plugs out of misfiring engines.

In my experience, Bosch spark plugs are always terrible; fouling out within a month, that kind of thing...