And you'll get deposits from excessive PEA too. PEA isn't the only cleaner available, and it is definitely not the 'end all' product.
Solvents, alcohols/naptha, esters, PIBa/m/s, and even those distillates,.... depends on the manufacturer and method, and not all is listed in marketing or sds info.
I think the important thing was... passing the ol' BMW ASTM d5500, or d6201, or d5598. I'd be more impressed with printed results from ANY of the products mentioned in this thread. Few might mention it with their marketing info.
As such, I am NOT anti the non-PEA products. So, try a can of Berryman B12, Seafoam, or the Schaeffers 131/131c.