Oil for my Volvo S80

[iExcel]

I recently acquired a pre-owned 2013 Volvo S80 with a 3.2L I6 engine. The Owners Manual calls for a synthetic oil that meets A5/B5 and suggests an OCI of 10k miles.

However, the same engine equipped on a 2012 model would call for a conventional oil that meets GF-4, API SL, or ACEA A1/B1 and suggests an OCI of 7.5k miles.

I have no problem putting in a synthetic oil in the S80 but just wonder, based on the fact that they're equipped with the same engine, whether a conventional can be used in a 2013 model with an OCI of 7.5k miles? I have some left over conventional oil from my previous vehicle and may want to use it up before touching my synthetic stash.

I typically don't do long OCIs and intend to do 5k for conventional and 7.5k for synthetic.

 

[camrydriver111]

If Volvo spec. it before it should be ok, but personally I would not run it all the way to 7.5k miles.

 

[ARCOgraphite]

http://lubrizol.com/EngineOilAdditives/ACEA/Sequences/ACEA-A5B5-10.html

 

[BikeWhisperer]

If it is under warranty, use a A5/B5 certified oil which is going to be a Xw-30 synthetic.

The conventional will probably work fine on shorter OCI's but if by chance you need an engine warranty you are giving Volvo an excuse to deny a claim.