And so to the oil service.
After a run out to get scran in for lunch, the Merc was up to temp, and oil extraction could begin.
Don't tell Junkman, but this om603 takes 8!!!! Litres of 10w40 for an oil and filter change.
Whilst the PELA did it's thing (and keeping an eye on it, as it only holds 6L at a time!) I set to removing the oil filter.
First, it was bonnet to 'service' position, and then loosening the single 13mm bolt, and 2 13mm nuts holding the filter housing lid on.
The construction is similar to the filter housings on the BMW M30 engine, but much more over engineered.
The BMW only has a central 13mm bolt. It keeps pressure even round the top seal, so God knows why there are an additional 2 13mm nuts holding the filter lid on the Merc?
The 2 13mm nuts come off straight away, but the 13mm bolt needs unscrewing and removing to allow the lid off past the bulkhead.
The old filter was tired, and the stylish* Waffle construction of the lid can be seen.
Next step was cleaning out the filter housing And getting the new filter popped in . Marvel at the handle !
Once everything was buttoned back up, fresh 10w40 was poured in(Asda had it at £13 per 5L).
The old oil was popped into containers for later processing*.
The result?
Much quieter running - on the motorway at about 75-80mph at a light throttle, it sounds for all the world like a large capacity 6 cylinder petrol..
I'm growing to like this tub!