When I see a vehicle with green valve caps I think Costco since Costco (at least the ones where I live) has been using nitrogen for years. My local dealer has also started using it. I consider it a gimmick on a street vehicle.
My 1988 Toyoya work truck needs new tires. Last set was put on by Costco, but that was years before they started using nitrogen. After the holidays I will have Costco put on another set on the truck.
Then I'm going to take the green caps off the truck and put them on the Boxster.
Then I'll let all the air out in the Costco parking lot and get free nitrogen in the Boxster.
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