Solutions Central Solutions Central › Tag: GDIFilter:AllUnansweredSort byViewsAnswersVotesDoes B12 Chemtool clean both GDI and port injection applications?chemtooler answered 1 year ago • -Questions - General940 views1 answers0 votesShould a gdi engine be run at a high rpm during valve cleaning? Must I change oil when process is complete?chemtooler answered 3 years ago • -Questions - General1054 views1 answers0 votes