how long before it actually goes stale? as far as i know shelf life of a Mobil 1 oil is 5 years.
Shelf Life of Unopened Mobil 1 Quarts
Question:
Shelf Life of Unopened Mobil 1 Quarts
Does Mobil 1 synthetic motor oil (in an unopened quart) have any sort of shelf life, like conventional motor oil?
-- John Lantz, Littleton, CO
Answer:
ExxonMobil recommends a five year maximum shelf-life for engine oils, including Mobil 1.
Having it inside your engine if not being contaminated by dirt or other factors, i would estimate 2 or 3 years at the most, being on the safe side. having it circulate in your engine would be good though. I'm sure you do that from time to time.
