Hey guys.. I noticed that there was no oil on the dipstick in my cb250 when i pulled it out. So I topped up some oil this morning for the first time (iv only had the bike for 3 months). I used some left over Penrite HPR5 5W-40 engine oil that i used for my car. Whilst riding to work this morning I found it a bit hard finding Neutral and even the down shifting seemed a bit harder than usual. Now it got me thinking... did I use the right oil? The label says that is can be used on 4 stroke-engine motorcycles. Or is this normal? Cheers!