I think they meant rislone, which is a brand name comprised of several different engine treatment products. When you drain out just one quart, you still have x amount of dirty oil in your crankcase, so I'm struggling to grasp the logic behind that suggestion. Maybe I'm just slow on the uptake here, but if the idea is to flush your system, wouldn't it make more sense to start as fresh and clean as possible? As for the oil weight, unless you are operating in an extreme, hot climate year round, straight 40 wt oil is way too heavy. If the temp was anywhere near freezing, you'd never get your poor engine to turn over with that molasses in the crank case. The original spec when these rigs were new was 30wt in moderate climates. That was established before multi-viscosity oil came on the scene. Multi-vis is far more versatile than single weight motor oil. 20w-50 is a great, year round choice if you live in a moderate climate. If your winter time temps are regularly 20f or below, then you would want to run 15w-40 in the coldest months. The other important consideration is filter choice. I recommend wix, hastings, baldwin, or purolator pure 1 in that order. You May notice that fram is not included in that list...and for good reason. The basic fram offering is very poorly constructed. While the higher level f's are probably a little better, I still think your money is better spent with any of the others previously mentioned.
I'll leave you with one final thought to ponder. Consider the qualifications of the folks offering you advice. I'll wager that none of them, including myself, is an ase certified auto tech. The difference between your neighbors and those of us who've chimed in on this thread is, we live and breathe these rigs. We May not have all the answers, but from a collective standpoint, there aren't too many facets of them that will stump us for very long. In most cases, we know what works and what doesn't. That's knowledge gained primarily through our own trial and error. Everyone means well, but this is still your rig. The responsibility of making the right decisions rests entirely on your shoulders. There is a lot you can do to educate yourself to that end, here on this forum. There is an oil tech subsection chock full of info and a recent thread pertaining to different grades of wix filters in the basic tech section, I believe, that is also quite informative.
