Tucker said:How many hours?? There's an 02 sensor on the motor that needs servicing every year. Do that, keep the fuel clean, run 2-micron filters if the boat is old, clean the VST every so often, and run the heck out of it.
GOA said:My OX66 is 15 years old:
-Regular Ethanol Fuel
-Pennzoil Extended Life oil
-Chevron Auto Fuel Additive during the season (purchased at Costco...big discount)
-Winter- Stor and Go additive(tank is generally 1/2 or less full...fill up with fresh gas before your spring run)
Good luck and enjoy!!!
GOA
seasick said:There is an argument to be made against using 2 micron filters especially with older tanks and fittings. Eventually all tanks collect some gunk and small particles that would ordinarily pass through the system can clog the 2 micron filters and cause a breakdown. As I understand, Yamaha does not recommend 2 micron filters but again I have been wrong before.
Tucker said:seasick said:There is an argument to be made against using 2 micron filters especially with older tanks and fittings. Eventually all tanks collect some gunk and small particles that would ordinarily pass through the system can clog the 2 micron filters and cause a breakdown. As I understand, Yamaha does not recommend 2 micron filters but again I have been wrong before.
I've read this argument before and, I'm sorry it does not make a bit of sense to me. I would rather have my 2-micron Racors clog than anything down stream. We are "blessed" with ethanol fuel here and I've had to tear into my VST filter screens, injector screens, regulator screens, and more. Since running 2-micron filters I haven't removed the VST's. I do carry spare filters but have never had a problem.
suzukidave said:GOA said:My OX66 is 15 years old:
-Regular Ethanol Fuel
-Pennzoil Extended Life oil
-Chevron Auto Fuel Additive during the season (purchased at Costco...big discount)
-Winter- Stor and Go additive(tank is generally 1/2 or less full...fill up with fresh gas before your spring run)
Good luck and enjoy!!!
GOA
fyi chevron "techron" is naptha. good stuff for a two stroke engine, but seafoam is the same thing and considerably cheaper on a volume basis.
i am interested to see two votes for the pennzoil. i've never seen it here and will want to try it. as someone who runs 50:1 in my old boat, the best non smoking oil i have found is shell nautilus, but there is not a big difference.
seasick said:My OX is about 14 years old. It has used Ring Free it's entire life. I use Penzoil XLF when I can get it on sale. Otherwise I use any TW3 oil that's on sale. Yamalube is too darn expensive.
Only use Stabil during winter storage. No stabilizers during boating season. I normally use Valv Tech gas which is mid range octane at my fueling dock. Using premium is a waste of money. All gas in my area is E10 at a minimum. E15 will most likely damage your motor.
I do not clean my O2 sensor every season. As a matter of fact, I only check it every 4 seasons or so. I believe that the most important thing you can do with SX motors is learn how to read the spark plugs and go from there. If your SX is running well, don't start looking for issues. You can spend unnecessarily money or mess up something that was previously running fine.