Oil additive question-Ceratec?
#91
Quick question as this is giving me pause - why does the Amazon page say "These engine oils are not intended for use in vehicles equipped with catalytic converters."
Link in question - https://www.amazon.com/Driven-Racing...904010ad0&th=1
Link in question - https://www.amazon.com/Driven-Racing...904010ad0&th=1