Hello all. I've got a dilemma. I have tried a bunch of different oils (had UOA's done on lots of them) in my Kawasaki atv, and I keep seeing a reoccurring theme. Oil disappears in this engine. Syns, dinos, HDEO's, blends, doesn't matter. I've tried them all. It did this from early on in stock form, and continued after a top end rebuild. It goes through about 2 to 4 oz. for every tank of gas, unless I'm going slow. I'm normally not bothered by having to add a little oil, but this summer, I'm going on a grand tour from border to border of my state, and having to pack a couple quarts of oil with me is just not going to be practical. So I'm looking for something to fix the issue (aside from putting new rings and seals in it which didn't help much last time). A little background on the quad: It was broken in properly, and has been very well maintained. I average about 3000 miles a year on it, all in dirt. Has lots of power, never failed me, and runs well. It smokes a bit on startup when it's cold out, but pretty sure that's due to forged pistons and/or valve seals. Goes away when it warms up. It's been built up a bit with 2mm overbore, high comp wiseco pistons, bigger cams, advanced timing, performance clutching, etc etc. It's run from 1200 rpms to about 8500 rpms max, but usually at around 5000 I would say. My temps here can be from 10 degrees F to over 100 F. And I do ride year round, rain or shine. This quad never sits more than 6 or 7 days. Now, all the oils I've tried have been 40 weight on the upper end. So what I'm contemplating doing is going to a higher weight oil in hopes of mitigating the oil consumption. Kawie recommends a 10w-40 for most situations, but lists a wide variety as acceptable. So, I've been hearing good things about the new Amsoil 20w50 Vtwin, and Maxima Extra 4 15w-50. I'm wondering what the opinions are of these two oils, and if there are any others I should look at? I'm just thinking this engine is one of those flukes, and that it wants a heavier oil. The best UOA I've gotten on this bike was with Amsoil Metric 10w-40. aluminum 15 iron 22 moly 48 phosphorus 1270 zinc 1480 [email protected] 71.1 flash 405 insolubles trace antifreeze pos 996 miles 1.5 quarts added in OCI The latest UOA was Rotella T6 5w40 Aluminum 15 Iron 34 moly 68 phosphorous 1101 zinc 1261 [email protected] 65.2 flash 410 insolubles trace antifreeze pos 1,058 miles 1 quart added in OCI Any thoughts or comments? All are welcomed! Thank you.