I've put 3000 miles on the Valkyrie since the last oil change using Shell Rotella T 15W40 conventional oil.
I pulled the dipstick yesterday to check the oil. No variation in oil level. It hasn't lost/used a drop. Oil is very close to the same colour as it was when I put it in. Can't believe how clean the oil stays in the Valkyrie engine. My 2006 KLR650 with the same oil is usually fairly dark when I drop it with 3000 miles on it. Both machines have close to the same mileage on the odometer. I suspect the KLR engine is working harder and spinning more rpm to cover the same distance. It's probably combustion by-product and clutch wear residue that are likely the main contributors to oil discolouration in the KLR.
I've also noticed that my liquid cooled 500cc Suzuki engines on my ATVs stay very clean as well. However, I drop the oil in them every 1000 miles.
Overall, the Rotella appears to stay fairly clean in most of my applications.
I pulled the dipstick yesterday to check the oil. No variation in oil level. It hasn't lost/used a drop. Oil is very close to the same colour as it was when I put it in. Can't believe how clean the oil stays in the Valkyrie engine. My 2006 KLR650 with the same oil is usually fairly dark when I drop it with 3000 miles on it. Both machines have close to the same mileage on the odometer. I suspect the KLR engine is working harder and spinning more rpm to cover the same distance. It's probably combustion by-product and clutch wear residue that are likely the main contributors to oil discolouration in the KLR.
I've also noticed that my liquid cooled 500cc Suzuki engines on my ATVs stay very clean as well. However, I drop the oil in them every 1000 miles.
Overall, the Rotella appears to stay fairly clean in most of my applications.