My oldest 1st cousin told that driving my at 55 or 56 miles per hour can eventually cause a lot of carbon build-up,& can eventually clog the catalytic converters. He also says every once in a while in Drive I need to blow it out.
Tell me what if any of this true?
I have almost 90K miles on this car,&I do 6K Full Synthetic Oil Changes & I live 1.5 miles the interstate, and about 4 days per week I drive about 16 miles to work.
So far it runs like a clock, & shifts like a dream as far as I can tell.
2.4 Liter 2009 Honda➖Accord Automatic