Recently bought a six pack of Pennzoil Platinum full synthetic oil. Printed on the carton was the following,
"JULY 2016-USE BY JULY 2020". I've never heard of such a thing! Can someone shed any light on the subject?
I've been buying oil when it's 'cheap' and hoarding it. I hope the additive package or whatever doesn't go bad over time.
What's the deal?


"FREE SAMPLE"