Review on 🔧 FEL-PRO SS 72802 High-Performance Valve Stem Seal Set by Eric Mueller

After seeing mixed reviews on the net, I decided to approach them scientifically. Mazda sells OEM parts in different sizes for the intake and exhaust valves, but Fel-Pro says they've found a way around that. Anyway I installed all 8 exhaust gaskets first with great results. After 300-400 miles I decided to try the intake side. On first start I noticed an uncomfortable amount of oil coming out of the exhaust pipe. I read about it and found some reviews online talking about the breaks so I decided to give them the 20 miles mentioned in that review. After 4 liters of oil I can guarantee they should NOT be used on the intake valves on Mazda BP engines. It gets 2 stars because if you are trying to save big on an engine upgrade you can buy them just for the exhaust and then buy the OEM for the intake and still come out cheaper than all the OEMs.