Cleaning a Thermoquad. What can I use, and what should I definately not use?

Well I asked him and he said. For hard grime like carbon and varnish they use industrial cleaners that you cannot buy in a store.

Here is what he recommends. after the sonic cleaner reaches maximum temp with the part in the tank. turn the sonic waves on for 20 min.

Industrial simple green
PN# 13405
Extreme Aircraft & Precision Cleaner

That is what the tag says on the white container. He also sprays parts down with pure straight "Super Clean" and lets them sit. There are times manual labor is needed with a brush.

This is OK for cleaning up parts especially small parts . Nothing beats a Hot Tank for large old engine blocks.

And if you own a sonic cleaner you need a wash tank also. for final rinse.

We also use a 30 gallon parts washer with an agitator nozzle set up. The longer you let parts soak the easier they are to clean like new.

Last night I was watching him re-sleeve a "Dart race block" it went in the oven and brought to 300 degrees also Hemi head seats 450 degrees. Without the extensive cleaning the oil in the block or heads would cook and stink the whole shop up.

Once you think its clean do it two more times. Spray it down with Dawn then rinse inside until suds are gone. when parts are finished they are always sprayed with 5-56 spray lube the same thing he sprays the machine tables and weighs down with daily. 5-56 is the only lube that doesn't dry up.