I still have some PenZ PP from about 07 and 08 that I haven't used. When I bought them I had three vehicles that I was doing oil changes on, but now am down to 1. It is kept in the garage, but it doesn't freeze in there. How long should I expect it to still be good or does it really ever go bad?
Stored oil life
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I think 5 years or so, sealed. Shake them before use.
http://www.carbibles.com/engineoil_bible.html Scroll down to the bottom of the page. It says 3 years
I guess it depends on conditions, but im still using up torque power stuff that is dated 06 and there is not settling or anything. Personally i would not be worried about using anything that is even 7 or 8 yrs old if it is still sealed and has not been sitting out in the weather. Just me but if it can last a year in a crankcase, it can last a long long time sitting in my shed sealed up. I have found old wolfs head stuff in my grandfathers barn a few years ago that still poured and looked like new and i would hate to guess how old that stuff is. I used it as top of oil for my old Toyota truck.
I date and price mark all my stuff when I put it on the shelf. Still using some Mobil 1 I purchased in 2000 for a little used vehicle. I've heard rumors of additives settling out in some older oils, but have yet to see it in any of mine.
Originally Posted By: bkbenjy
http://www.carbibles.com/engineoil_bible.html Scroll down to the bottom of the page. It says 3 years
I wouldn't believe much in that article. 15W40 needing to be changed more often?
"Mineral Characteristics
10W-40 15w40 Basic protection for a variety of engines
Oil needs to be changed more often"
Look at this gem: "Well most of the diesel oil specification oils can be used in old petrol engines for cleaning, but you want to use a low specification oil to ensure that you do not over clean your engine and lose compression for example. Generally speaking, an SAE 15W/40 diesel engine oil for about 500 miles might do the trick. "
Over clean your engine? Everyone, QUICK - dump your PP NOW, before it's too late.
I've used 6-10 year old HDEO oil without issue. In fact, the next change on one of my Jeeps will be with Chevron Delo 15W40 from 2002. I haven't a worry in the world.
A little off topic - This article states: In 1996 the EPA forced that to be dropped to 800ppm and then more recently (2004?) to 400ppm - a quarter of the original spec.
IIRC, the SM spec limited ZDDP to < 1000 PPM. I know I've seen SM VOA's with higher than 400. Anyone?
http://www.carbibles.com/engineoil_bible.html Scroll down to the bottom of the page. It says 3 years
I wouldn't believe much in that article. 15W40 needing to be changed more often?
"Mineral Characteristics
10W-40 15w40 Basic protection for a variety of engines
Oil needs to be changed more often"
Look at this gem: "Well most of the diesel oil specification oils can be used in old petrol engines for cleaning, but you want to use a low specification oil to ensure that you do not over clean your engine and lose compression for example. Generally speaking, an SAE 15W/40 diesel engine oil for about 500 miles might do the trick. "
Over clean your engine? Everyone, QUICK - dump your PP NOW, before it's too late.
I've used 6-10 year old HDEO oil without issue. In fact, the next change on one of my Jeeps will be with Chevron Delo 15W40 from 2002. I haven't a worry in the world.
A little off topic - This article states: In 1996 the EPA forced that to be dropped to 800ppm and then more recently (2004?) to 400ppm - a quarter of the original spec.
IIRC, the SM spec limited ZDDP to < 1000 PPM. I know I've seen SM VOA's with higher than 400. Anyone?
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