Om642 Oil Type

matthew k

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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

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

Gazwould

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

LostKiwi

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matthew k

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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

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'93 500SL-32, '01 W210 Estate E240 (RIP), 02 R230 SL500, 04 Smart Roadster Coupe, 11 R350CDi
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.
 
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matthew k

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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

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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
 
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matthew k

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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

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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

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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

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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.
 


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