Hey guys, as you know the main filter back in the day was Purolator for the gen 1. When the Gen 2 came along, we started using the wix filter which everybody uses the wix filter. From my understanding is the one who made the filter for the Dodge Viper that has Dodge Viper. It's a SRT. So whether you use wix whether you use Mobil one? I know a lot of people like mobile one. They've been using mobile one for years. I prefer the wix XP and I have personally compared the filters. They're they're exactly the same. I would say this. I do like the SRT because it says Viper on it. You want one? I would say see if you can find a clothes out because actually RockAuto had some and I purchased all they had which was about 20. I think I have 14 left but the best filter for the Viper to me in my opinion is the wix XP