Hey guys. I have a Honda HRM215, I think with the GXV140 engine. It's over 20 years old, and I've had it for about 8. It always runs great and starts with 1 pull. Lately, it smokes a little on cold start, but if I have to shut it down, as it spools down it smokes bad. It smokes bad on hot starts too. While it's running I don't see any smoke, but I smell faint burning oil. I put a new plug in and changed the oil in the fall, and I've only cut the grass 7-8 times this year. Already, the oil is down about 1/3 of the way on the cross hatching and the plug is covered in sticky black goop. Seems to me like it's starting to burn bad and is on the way out (I'm guessing valve seals). Since it runs so well, I'd love to get a few more years out of it...any idea what will help these motors reduce oil burn?