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Hey guys I acquired 12 gallons of old deli 15-40. Its at least 7 yrs old. Is it still good to use? My dad bought it for his cat back in the day. He passed away 3 yrs ago, I was going through his old shed and found blown out cardboard boxes with these gallons of Delo. Id like to run it just no sure. Looking to see what the experts have to say.
Studies have been done on 30, even 40 year old oil. The greater majority was deemed suitable for use.
Additive fall out may happen, and after pour you might see a small amount of particles in the bottom of the jug.
With fresh oil, the same thing may happen.
Give it a good shake, and run it.
CJ-4 Delo was a very good oil, the new stuff, yeah, not so much.
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