I just bought a '77 CB400F motorcycle with 6,500 miles. It is suggested by the owners manual to use 10W-40 and to be changed every 1,500 miles and filter changed every 3,000 miles.
Here are some questions
1) Since modern oil is so much better, do I still have to change it every 1,500 miles?
2) I doubt this bike has ever had full synthetic oil in it, is it safe to use full synthetic in old engines like this?
3) If it is safe, should I use conventional or fully synthetic?
4) Does anyone make a good oil filter for my old Honda? Or should I just use the Honda oil filters?
Any help is appreciated, thx
Here are some questions
1) Since modern oil is so much better, do I still have to change it every 1,500 miles?
2) I doubt this bike has ever had full synthetic oil in it, is it safe to use full synthetic in old engines like this?
3) If it is safe, should I use conventional or fully synthetic?
4) Does anyone make a good oil filter for my old Honda? Or should I just use the Honda oil filters?
Any help is appreciated, thx