Unless you’ve had issues, the FL500S has been pretty good. Believe it or not, I’ve had good luck with both the jobber Champ made & Puro made Valvoline VO-105 ones on multiple Ford Transits (that call for an FL500S) for~7500 mile OCIs, all of them over 100K, no issues. The VO-105 can be pretty cheap on eBay, along with the similar Champ PH500, if you don’t go too long on them (combo valve).