2014 Mercedes-Benz OM651 // 15,000 mi update // Pennzoil Platinum Euro L 5W-30

Messages
3,581
Location
Northern Ontario, Canada
The increased iron would concern me as it increased at a higher rate than the miles.
Miles went up 50% while iron almost 100% increase ppm.
Even though base is at 3.5, I would be shortening the OCI to max 8,000 miles, if it was my car.
 
Messages
42
Location
Greece
In comprarison with other oil analysis on this engine I believe that wear metals are excellent for 15k miles
For reference




Usually xw-40 oils give better wear results in uoa in the OM651.. but you can't compare because of different use conditions, avg speed, fuel...etc. I have the same engine and I am using Mobil1 ESP 5w30 (Mobil super 3000xe once) for now and sometimes MB original 229.51(Petronas). Also tried Eneos Premium hyper 5w30 but I experienced loud lifter noise on morning start ups.
 
Messages
577
Location
Stewartstown PA
Appreciate your commitment to used oil analysis and trust in oil. I am not mechanical but like engines with dipstick where you can drain oil using a pump especially when have high quality oil filter. With such a nice car and engine-would definitely side on being more conservative with oil changes especially in the context of all the emission restrictions on diesel vehicles, which can stress the engine oil longevity.
 

mosschops

Thread starter
Messages
9
Location
Pacific Northwest, USA
The 10k sample was extracted through the dipstick while the 15k sample was taken as the oil was draining from the sump. I attribute the inconsistencies in the results to the difference in sampling methods.
 
Messages
5,503
Location
Florida
Awesome results, in my opinion.
If use and driving conditions remain the same, are you planning on staying at 15k with this oil or try something else and or lower OCI?
 
Messages
99
Location
WI
Seems to be a great result for a budget oil. I have the same engine in my GLK and I might just go back to PP Euro L, for both my diesels, and just shorten the OCI to around 8K.

It's a great oil that gives great results, it's cheap and easily found on the shelf.
 
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