Lonnie- Hey, it`s great to see that somebody else appreciates the M62! I`ll miss the scent of it when I finally use mine up..who knows, I might end up buying more.
How would you compare the D110 Hyperwash to the M62? If I like the latter, do you think I`d consider the D110 OK for wheels/wells/undercarriages?
Oh, and I guess I oughta say something about how FK1000P lets me leave bugs/etc. on for months and then wash `em off with no etching, but since YMMV and you already know what you`re using on the customer`s cars I`ll just stay quiet about it

Sorry, couldn`t resist..
Coleroad- Ah, that`s interesting about the GC messing with your LSP. I guess I didn`t give it enough use to notice that, and/or it didn`t matter much once I was just using it up doing the underneath.
Accumulator:
For wheel wells, I use
Megs Detailer Line D101 APC and for tires and rims I use
Megs Detailer Line D143 Non-Acid Wheel Cleaner. I find them to be better suited and effective for those cleaning task, rather than using carwash soap. For engine compartments and under carriage, I use
Optimum Power Clean because, again, it is effective as a degreaser and will not cause whitening or bloom on machined or cast aluminum parts, although it is somewhat "expensive". I have a local farm supply store (Fleet Farm) that sells a degreaser called
Jungle Jake Degreaser and Cleaner made by Stearns Packaging Corp. in Madison, WI that is about 1/4th the cost of OPC and I have used that degreaser on vehicle under carriages in the past. I still use it for a lot of general garage items cleaning, like concrete or epoxy floors (which is my main use), lawnmowers, snow blowers, trimmers, and shelving. The citrus-eucalyptus fragrance is very pleasant for an "industrial cleaner".
For reasons mentioned in my post,
M62 Car Shampoo and Conditioner is a great car wash soap because it rinses clean and works well in hard(er) water, BUT
D110 Hyperwash is a more cost-effective (AKA less expensive) soap that cleans very well, and that is the reason I am using it
If there is one carwash maintenance soap I would like to try, it is
Poorboy`s Super Slick and Wax Car Wash Shampoo because it is sun-friendly, BUT at $45.00 per gallon, it is even MORE expensive than M62! I ALWAYS try to do my 2-bucket car washes in the early morning or late evening building-provided shade out of the sun , BUT there are those rare instances when washing a car mid-day in the sun might be necessary (cool early spring or late fall days), and having a car soap available that does not streak in the sun would be extremely helpful. By the way, I think someone from Poorboy`s said that even though the label says "Carnauba" on it, it has silicones that help reduce or mitigate the filming/streaking when used in the sun (IIRC!).