Out of date oil (Oct 2009) - still ok to use?

[g3org3y]

Wondering what the general consensus is.

Have a 1L bottle of Mobil semi-synth 10w-40 in the boot for emergency top ups. Never actually been used however (still has sealed cap). Messing around in the boot today, by chance had a quick glance at the oil and noticed that the 'expiry' date is Oct 2009 (it's been in the boot a while!).

Is the oil still usable or not worth the risk? Not sure how oil degrades over time (and its associated lubricating properties).

[durbster]

Blimey, I didn't realise oil had an expiry date. Better check my spare bottle I keep in the car too

[J4CKO]

No, will give your car the squits.

[LuS1fer]

Let me think. it was in the ground for a million years....

I'd use it.

If unsure, dispense a small amount into a small bottle and give it a good shake. Does it froth? Now open it and check whether it smells of almonds. if so, don't use it. **

• I just made this up.

Edited by LuS1fer on Monday 23 January 12:31

Edited by LuS1fer on Monday 23 January 12:31