S40: engine oil

[skyship007]

Originally Posted by morrismen

Shell 10W/40. Volvo Dealers provide this too now for S40/V40.

I thought Volvo had a deal with Castrol. The German dealers are very fussy about oil type because most folks here use the max OCI figure of 15K km for most V40's or 20K km for the P2 1.9D's.
For the older Volvo's they currently use and sell Castrol Edge 5/40, but you can get them to use Castrol Magnetec 10/40 if you agree to a warning on the receipt about the OCI figure (Reduced to 15K km from 20K).

[Dean1985]

Originally Posted by skyship007

Olive oil 5/40 !!

Think I'll stick with the sunflower oil as my chips taste pretty nice anyway.

[Dancake]

Say for example you wanted to change from Magnatec 10W40 to Mobil 0/40. Would the change in oil require the Magnatec to be flushed? There wouldn't be that much left in the engine after draining it, but would the remaining Magnatec be able to mix with the Mobil without causing problems?

[skyship007]

Originally Posted by Dancake

Say for example you wanted to change from Magnatec 10W40 to Mobil 0/40. Would the change in oil require the Magnatec to be flushed? There wouldn't be that much left in the engine after draining it, but would the remaining Magnatec be able to mix with the Mobil without causing problems?

There is no need to be concerned with flushing out any old oil, because all modern engine oils are designed to be compatible.
Never use flush additives you drive around with as they can kill the turbo bearings, if you do think your engine has a very minor case of sludge that does not warrant physical cleaning of the sump and head, just add a can of Liqui Moly flush just before the oil change and let the engine idle for 10 minutes before draining the oil. The "At idle" type flush additives are safe, but the others are a gamble.