I tried a search and came up with nothing so apologies for an old topic. Simple question. How long can 100% synthetic oil sit in the engine before it is considered too old? The old wisdom being change oil every 3000 miles or three months. My case being, I have had my S4 for 10 months and have only put a hair over 5000 miles on it and this is my second oil change. So I am well under the every 3000 miles part but way over the three months part by double. Is synthetic different in the ability to not break down as fast by just sitting in the engine for long periods?
I run Motul 8100 X-cess 100% synthetic.
