I bought the NGK (said to be the OE manufacturer) over Volvo branded due to the gross price difference at the time. The current prices listed in the link above are much more competitive (aka sane).
Electric cleaner spray and "real MAF" spray are the same price-possibly $1 more- here (New Jersey).
I've read appeals for both the residue free cleaner and the real thing but have never seen any demonstration of one over the other.
Once blueing some metal I used electric cleaner as a final prep. The residue, which is a lubricant I believe, made the finish all rainbowed (like oil in water) and swirly....not blue.
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