I can't find the type of oil recommended by the manuals for my 85 Big Red. The guy at Napa said that type of oil wasn't made anymore, that they had changed the classification letters/numbers. He recommended regular 5w30 engine oil. I didn't buy it, I bought Delo 30w that said Specially Formulated For 4Stroke Engines, gas or diesel. Now my kickstart won't work/slips. Wondering if the heavy oil or the type is causing the slip. The Delo's classification is CF/SL. The manual says use Honda 4stroke, SE/SF. What do you guys use??