Hello,
Replaced my after market, all aluminum radiator. Well out of warranty, but the rad shop owner checked for electrolysis but didn't see any and after discussing it with the maker, they decided to issue a new replacement!!!
Also checked/cleaned the ground from the battery to rad support and installed new air cleaner element. Tommorrow's plans include servicing the rest of the truck (oil, grease, filters) and checking all of the rest of the grounding straps. If time allows, rotating the tires. Rad shop was Best Radiators in Hays ks.