Narcis,
What would you hope to gain/improve by adding the Lucas Engine oil treatment?
Mobil 1 0w-40 European Car Formula has all the additives you need for a T1N
5 cyl 2.7 liter OM-612 or OM-647 Sprinter.
Mobil 1 5w-40 ESP (Emissions Systems Protections) Formula M has all the additives
you need for an OM-642 V6 3.0 liter NCV3 Sprinter.
Plain ULSD diesel fuel from high volume fueling stations, blended correctly for the season/temperature has all the additives you need to keep your Sprinter running
at it's peak if you change the engine oil and fuel/air filters at the MB recommended
intervals.
Drive them correctly.....up in the best efficiency range for the speed and road conditions,
and additives are IMHO a waste of money.
Running > 2000 RPMs (get it up to 3200 a few times a day to "blow out the soot and
other diesel combustion by products) will keep your Sprinter running at max. efficiency
for many, many trouble free miles.
The cost/benefit of driving your Sprinter efficiently at a bit higher RPMs (usually < 0.5 MPG) will most certainly save you significant $$ over adding a bunch of additives that may do something good, but then again may do something bad.
Never had any of the EGR/TR/DPF issues with any of my 4 Sprinters so far, and not a
single additive has ever been added to the engine oil, trans fluid, rear end gear oil,
or the fuel. Why have I had 4 Sprinters.....2 of them have been taken off the road in deer crashes.
My services are all preformed at an authorized MB Sprinter dealer (Sun Motor Cars) at as close to the correct mileage as I can manage (usually within 100-200 miles before or after the recommended interval).
My cost of ownership is quite good doing things this way.
I see lots of others using additives, non- approved fluids and parts, and they seem to
have a lot of problems.
I don't have any of these problems, so I can only surmise that saving money on parts and fluids.....using lots of additives.....is a "self inflicted" way to increase your cost per mile and
ensure that your Sprinter is less reliable that it was designed to be.
Roger