I have used PRI-G the 16 oz version for a vehicle I had in storage. The vehicle had winter gas in it. I live in BC Canada so that means the gas or fuel very had unstable components in it; 18 months later when I was ready start the vehicle the gas not degraded and the vehicle worked started with no problem.
Best Answer: >If the ranch has a preservative added, give it a shelf life of about 3 months unrefrigerated. Otherwise, if it has been out for more than 4-5 days, at room temp then toss it. You are right, we are spoiled alright, but we also live longer than a lot of people do in the world due to less food poisoning.
How long does an unopened package of ranch salad dressing last at room temperature? Properly stored, an unopened package of ranch salad dressing will generally stay at best quality for about 12 to 18 months.