Switching to high saps oil after DPF delete

[nick9one1]

I have a BMW 640D with an N57 engine. It has a reputation for spinning crank bearings so I've been looking at ways to reduce the risk. I'm currently using a high quality oil and changing at 2x BMW recommendation.

I've recently done a swirl flap, EGR and DPF delete. I think this means I no longer need a low sapas fuel. Would I benefit for extra protection if I swap to high saps?

Thanks

 

[tired]

I have a BMW 640D with an N57 engine. It has a reputation for spinning crank bearings so I've been looking at ways to reduce the risk. I'm currently using a high quality oil and changing at 2x BMW recommendation.

I've recently done a swirl flap, EGR and DPF delete. I think this means I no longer need a low sapas fuel. Would I benefit for extra protection if I swap to high saps?

Thanks

Try posting in the Euro forum. I think you'll get a response.

Or a mod could just move this to the Euro forum.

 

[SR5]

Low SAPS (Sulphated Ash %) is to protect the exhaust emissions control systems. So yes, if they don’t exist, you can then run high SAPS Euro oil like A3/B4.

It should have more TBN for longer oil life and higher ZDDP (zinc) for less engine wear.

 

[Patman]

Try posting in the Euro forum. I think you'll get a response.

Or a mod could just move this to the Euro forum.

Done!

 

[CleanSump]

You're free now to use any oil rated for Diesel (for the dispersants) and preferably an HTHS of 3.5 or greater. Beyond that what specifics for Zinc etc is up to your preferences. You can stick to the LL-98/LL-01 specs if you prefer or you could use Rotella or Helix if you want.
Getting rid of the EGR and the swirl flaps saves the headache of cleaning all that out when they stick from crud build up in the intake. Probably even better for your engine than the DPF delete.

 

[tired]

I have a BMW 640D with an N57 engine. It has a reputation for spinning crank bearings so I've been looking at ways to reduce the risk. I'm currently using a high quality oil and changing at 2x BMW recommendation.

I've recently done a swirl flap, EGR and DPF delete. I think this means I no longer need a low sapas fuel. Would I benefit for extra protection if I swap to high saps?

Thanks

The current low SAPS oils are well formulated so I don't think you will get an extra protection from a full SAPS oil. I think they both protect well.

Edit: I didn't actually phrase that well. Lower SAPS oils use better base oils to make up for the lower amount of metallic additives. Lower TBN but the TBN degrades much more slowly. So similar level of protection, just through different mechanisms.