Oil consumption question
04-13-2011, 06:08 AM
#16
I've been researching this and it appears that an unopened bottle has a recommended shelf life of 5 years but, once opened and exposed to air, that drops to 12 months. There is also a concern about 1) sedimentation 2) repeated freeze/thaw cycles and 3) possible long term reactivity of the oil with its plastic container.
http://www.bobistheoilguy.com/forums...Number=1703349
http://www.bobistheoilguy.com/forums...Number=1703349
04-13-2011, 09:29 PM
#17
Race Director
All engine oils approved by Porsche can be mixed provided they are of the same Porsche oil specfication. There is no need to flush the engine when changing from approved oil to another.
Porsche does say that since every brand of oil has a 'specially adapted composition' the same brand and type of oil should be used for topping up between oil changes if possible.
Where you are, based on what Porsche has to say 0w-40 is it. This is year 'round oil for you.
The dealer almost certainly used Mobil 1 0w-40. But ask. And carry a bottle of oil with you in the car to use to top up should the oil level drop some.
Sincerely,
Macster.
04-14-2011, 10:47 PM
#18
Yes, oil must be refrigerated after opening.
...
Seriously? Why would it degrade in 6 years once opened? It is oil, not milk.
I just read an article the other day that said 30-40 years shelf life. And that was only limited because no one actually knows the shelf life, or if there is a shelf life at all. Just use your half quart of oil. Or send it to me and I will use it.
...
Seriously? Why would it degrade in 6 years once opened? It is oil, not milk.
I just read an article the other day that said 30-40 years shelf life. And that was only limited because no one actually knows the shelf life, or if there is a shelf life at all. Just use your half quart of oil. Or send it to me and I will use it.
