Originally Posted by
super_hunt54
??? There's no petroleum in Brake Cleaners. It's made to eliminate petroleum based products such as grease and brake fluid from disc rotors. I've used it several times for degreasing prep for bluing/browning barrels. Never used that dynatech stuff before so I have no knowledge about the heated pores accepting it better but I can tell you without a doubt there is absolutely no oil residue left after using brake clean.
This is from the MSDS
3. Composition/information on ingredients
Mixtures
Methanol 108-88-3 10 - 20
Toluene 67-64-1 5 - 15
Acetone 589-34-4 5 - 103-
Methylhexane 124-38-9 5 - 10
Carbon dioxide 142-82-5 5 - 10n-
Heptane 108-87-2 3 - 5
Methylcyclohexane 64742-49-0 3 - 5
Naphtha (petroleum), hydrotreated light 110-82-7 1 - 3Cyclohexane 100-41-4 < 0.