06-05-16, 07:52 PM
Are you sure Yamaha recommends type of oil like mineral, or semi synth? All I saw was API standard required. For FZS 600 it's API SG, and it comes in mineral and semi synth, while most fully synth oils exceed that standard.
Fully synthetic oil will protect engine best. Manufacturer's recommendations are OK, can't go wrong with that, but going better doesn't do harm - depending on how long you plan to keep the current motorcycle. Using fully syinth has two advantages:
1) Engine is cleanest, no burnt oil residues
2) Minimal fuel savings that make price difference almost none in the regular oil change interval (unless you ride less than 3000 miles per season)
3) Whatever happens, you are 100% certain it's not the oil - since you are using the best available
4) Better cold start protection - first few minutes after cold start make most of the engine wear, unless revving to the redline on a track.
5) Longer change intervals, with still providing better protection than mineral/semi synth oils - less hassle and lower cost - if riding higher anual mileages.
Fully synthetic oil will protect engine best. Manufacturer's recommendations are OK, can't go wrong with that, but going better doesn't do harm - depending on how long you plan to keep the current motorcycle. Using fully syinth has two advantages:
1) Engine is cleanest, no burnt oil residues
2) Minimal fuel savings that make price difference almost none in the regular oil change interval (unless you ride less than 3000 miles per season)
3) Whatever happens, you are 100% certain it's not the oil - since you are using the best available
4) Better cold start protection - first few minutes after cold start make most of the engine wear, unless revving to the redline on a track.
5) Longer change intervals, with still providing better protection than mineral/semi synth oils - less hassle and lower cost - if riding higher anual mileages.
Most things done in a hurry need to be done again - patiently.