Just to add to the weight of numbers, whatever you do, DON'T run it for 10 minutes under no load!!!! That's exactly what the previous owner of my current car did. Unusuall ylow mileage for its age, the car had been stored in a barn for several years when I bought it. "Ah, but don't worry", he said, "I've started it upo and run it for 10 minutes each week to keep the battery topped up".
Well, I got the car home and took the oil filler cap off. The cam chest was just full of foul mayonnaise that stank of fuel. Took both cam covers off and I was SCOOPING this stuff out of there with a tablespoon it was that bad! The cam lobes had gone rusty from sitting in it and had to be replaced. Lord knows what the bores are like from being started up on their cold start enrichment with the oil never allowed to warm up enough to evaporate the unburned fuel that got into it past the piston rings! There ought to be a (capital) offence of causing cruelty to engines, and this guy should have been hung, drawn and quartered for it!