PlankBlender
Hi Planky
To answer your question the 50 hour oil change is recommended for the longevity of the engine, is not really a safety issue.
If you are the aircraft owner you will want to keep the costs of your engine overhauls down, the oil change interval helps with this.
Just plan to be at an airport were you can carry it out, for private operations oil change is listed as pilot maintenance.
Don't be like one of my customers with a Bell 473B1, landed 30 minutes short of his destination in a paddock because his oil and filter change was due. Ended up with a screwdriver stuck through the filter and no way out.
Duty of care as a LAME prevents me from recommending anything other than the OEM continuing airworthiness data, but commonsense should prevail.