Apply standard liquid caw wax to white walls,then scrub with scrub brush, then wash off with hot water.
Westley’s bleach-white works well with a grill brush.
As you are hand washing your car or truck spray the white letters as well as the sidewalls with WD-40 or equal. Then scrub them with your hand or brush if there real bad. You can`t believe the grime and brake dust that you will remove.
I use fine dry sand paper, the one you use for sanding wood, NOT wet and dry , works for me,
Apply standard liquid caw wax to white walls,then scrub with scrub brush, then wash off with hot water.
Westley’s bleach-white works well with a grill brush.
As you are hand washing your car or truck spray the white letters as well as the sidewalls with WD-40 or equal. Then scrub them with your hand or brush if there real bad. You can`t believe the grime and brake dust that you will remove.
I use fine dry sand paper, the one you use for sanding wood, NOT wet and dry , works for me,