I would just shoot for 229.52 which supersedes 229.51. Check the approval lists, any 229.52 oil on the approved list should be fine. Basically 229.5 is best for gas, 229.52 is best for diesel even though you could use 229.51 or 229.52 in gas engines.
Most oils with MB229.52 have dual MB229.51 and MB229.52 approvals. That is why I mentioned that way.
Yes they do achieve as Low-SAPS oils are on the market since 2004 in Europe, and thsoe diesel taxis are still clocking 100's of thousands of km's.
Thanks for recommendations. According what we all said in this thread, can it be that 229.52 is slightlyyy better for diesels without DPF than 229.5? A lot of online oil recommenders don't show 229.52 but it could be because 229.52 is not so old approval.
Basically 229.5 is meant for gas vehicles. 229.52 is the latest spec for diesels so doesn't get mentioned that often if you're look at older documentation. That supersedes 229.51. 229.5 and 229.52 are two different types of oil for two different purposes. I still use 229.5 only in my gas vehicle, wouldn't put 229.51 or 229.52 in it even though I could.
Have to disagree with you. Approval 229.5 is for diesel and gas engines without DPF filter just there is a bit more gas engines that uses 229.5 approval.
Not bad for more than 200hp engine but could it be better? With my mentioned car I cruise 49-52 mph with fuel consumption of 52 mpg (average 1700rpm) but when someone else drive my car it is 42 mpg.The best fuel economy numbers I've seen were around 35-36mpg, but my speed of 68mph on the interstate was too nerve-wracking and I chickened out after an hour or so. I resumed cruising at around 78-80mphAt those speeds I'm seeing 31-32mpg.
The difference is that you drive on highway if I'm correct. I would have similar consumption as you on highway, maybe litle higher mpg.
