Originally Posted By: Provi
Originally Posted By: sayjac
Actually the 'super soft looking' orange adbv doesn't look to be a standard silicone adbv, it looks more like a 'combo' valve like those now used in Napa Silver series and Napa Pro Select. I've never had an issue with silicone adbv and prefer them to nitrile. I'm not a fan of the combo valve design.
The Valvoline does look to be ecore, which as mentioned by mechx is ironic since it is a Champ made ACDelco design. Afaik, current Valvoline filters are now made by Purolator like the QS, Pennzoil etc.
Yup it is from an old Napa Gold, The new NG1372 does not use the combo.
That is an interesting phenomenon on several levels. Afaik that is only 'silicone' combo valve application design ever posted here. That design apparently didn't last very long and perhaps the above picture is an indication of why. They (Wix/NG), apparently have now gone to a dome bypass in that filter application.
Lastly, when I think ACDelco I think primarily of filters for GM vehicles which have engine block bypass built in, so no need for filter bypass. That being the case, there would be no need for a combo valve, just an adbv. Perhaps that is from/for a non GM vehicle? In any case, that design has apparently been discontinued.