MJWB
Active member
I have some new unopened engine oil bottles on board. 15W-40. Bottles date stamped 9/2017. Any views on what the shelf life might be please? Thanks.
Yep, same goes for my billion something year old Himalayan Rock Salt that has a use by date on the packet! Me thinks they're trying to fool us, Your HonourNever understood shelf life on bottled spring water ,, been underground for years . Why would it go off in a bottle
Leaching chemicals from plastic bottles.Never understood shelf life on bottled spring water ,, been underground for years . Why would it go off in a bottle
Modern lubricants may include 25% additives. The distilled hydrocarbon content may not deteriorate in storage, although there may well be some changes due to the formation of asphaltenes. But there will certainly be some interaction between, and degradation of, the additives. The oil may run in the engine but wear will accelerate and it may foam, with negative effects on the bearings.Probably about a1,000 years depending on storage conditions?
I am not joking.
Awaiting the scientists.............
vyv, are there many additives in 15/40 oil? I always thought it was basic 'van oil'? Basic natural?Modern lubricants may include 25% additives. The distilled hydrocarbon content may not deteriorate in storage, although there may well be some changes due to the formation of asphaltenes. But there will certainly be some interaction between, and degradation of, the additives. The oil may run in the engine but wear will accelerate and it may foam, with negative effects on the bearings.
All lubricants contain additives. Cheap oil blenders will buy in a complete package from an additive supplier, major names will use some of their own plus components from commercial suppliers.vyv, are there many additives in 15/40 oil? I always thought it was basic 'van oil'? Basic natural?
Please elaborate, with respect.