Om642 Oil Type

[matthew k]

Hi, sure I've asked before but what oil should I buy? My cars done 160,000 miles, and I'm going to have to buy it online, Ebay etc. I'm thinking a 0w/40 or similar, but I'm not sure on the spec? Thanks

 

[LostKiwi]

Anything with MB229.51 approval.
Mercedes Newcastle do MB oil on eBay for not much money.

 

[JBell]

This

https://www.ebay.co.uk/itm/20L-Genu...964004&hash=item442629d0c1:g:aYAAAOSwaIpb0EAo

 

[matthew k]

5w/30? Or should I go for a 40 weight?

 

[Wighty]

5w/30? Or should I go for a 40 weight?

For this price of just over £40 , I’d go with 5w30 this time unless you have had problems ?
https://www.ebay.co.uk/itm/Mannol-7...=303124417772ee73a596795e46b2907a784c80b6ab6f

 

[Gazwould]

^ more protection and better for dpf ( if fitted ) this one .

 

[LostKiwi]

My own personal preference is 5w40 if you can get it.

 

[mersum1es]

https://bevo.mercedes-benz.com/bevolisten/229.51_en.html

https://bevo.mercedes-benz.com/d/d/en/Spec_223_2.pdf

 

[matthew k]

Thanks, does anyone know which tool I need to buy to remove the filter housing cap? Cheers


https://www.ebay.co.uk/itm/322474524183

Would this be suitable?

 

[LostKiwi]

Thanks, does anyone know which tool I need to buy to remove the filter housing cap? Cheers


https://www.ebay.co.uk/itm/322474524183

Would this be suitable?

To be sure count the flats and measure the diameter.
But it looks right.

 

[mersum1es]

Thanks, does anyone know which tool I need to buy to remove the filter housing cap? Cheers


https://www.ebay.co.uk/itm/322474524183

Would this be suitable?

Yep 84mm 14 flutes.

 

[matthew k]

I've ordered MB229.51 05w/40 fully synthetic. I've just thought, this isn't going to create too much oil pressure is it, I don't want to blow out any seals etc? Cars done 150,000, not 160. Cheers

 

[LostKiwi]

I've ordered MB229.51 05w/40 fully synthetic. I've just thought, this isn't going to create too much oil pressure is it, I don't want to blow out any seals etc? Cars done 150,000, not 160. Cheers

Oil pressure is regulated by a pressure relief valve. Pretty much impossible to blow seals anyway as most aren't subjected to pump pressure oil.

 

[matthew k]

I've just thought, MB229.51 is low ash, my car doesn't have a DPF. Would I be better off with 299.5 instead, does the low ash stuff offer less protection from wear?

 

[JBell]

I've just thought, MB229.51 is low ash, my car doesn't have a DPF. Would I be better off with 299.5 instead, does the low ash stuff offer less protection from wear?

229.5 is for petrol engines, 229.51 is for Diesel engines

 

[matthew k]

229.5 is for petrol engines, 229.51 is for Diesel engines

Thanks, you've put my mind at rest. Just waiting on the sump washer now, the days of getting one with the filter seem to be behind us!!!

 

[JBell]

Thanks, you've put my mind at rest. Just waiting on the sump washer now, the days of getting one with the filter seem to be behind us!!!

Because everyone uses a pump to suck the oil out these days rather than draining from the bottom

 

[Blobcat]

Because everyone uses a pump to suck the oil out these days rather than draining from the bottom

One reason is that most garages (and a lot of DIY’ers) suck the oil out

 

[pgh13]

Thanks, you've put my mind at rest. Just waiting on the sump washer now, the days of getting one with the filter seem to be behind us!!!

I can’t remember ever getting a sump washer with a filter. Come to think of it, when I was much younger (and even poorer than now) I never changed a sump washer; just put some goop (red Hermatite or ptfe tape) on the thread.

 

[Wighty]

Thanks, you've put my mind at rest. Just waiting on the sump washer now, the days of getting one with the filter seem to be behind us!!!

The .51 oil has an extra additives and cleaners for dirty Diesel engines