https://prosoco.com/products/prosoco-slx100-water-oil-repellent
Im going to try Armor L3000 & SX5000 instead. $395 for enough product to do 1600sqft no problem.
its 40% solids (SLX100 is 58%, so it will last longer), but for the money its worth a shot. They claim 7-10yrs, even @ 5yrs, its less...