Oil questions...

[Fabulous]

To the best of my knowledge No oil is going to give spotless spark plugs , especially after 500 hours of continuous use

 

[Motorka]

Isnt lifetime of a sparkplug 100 hrs ?

 

[pbillyi69]

if it is, the spark plugs in my truck should be shot.

 

[Sloughfoot]

if it is, the spark plugs in my truck should be shot.

Maybe 100 is when the warranty runs out.

 

[Partner]

100h or 100k miles depends on the user

 

[bwalker]

Its funny how much residue all oil choices except for ultra have.....

Especially slide with sparkplugs....

Amsoil @1:100 has the same deposits as mineral HP or Echo blend @1:50

LoL.....

Its a complete BS test, but in a extended time full throttle test in a four stroke motor I would expect an ashless oil to do better.
Any application that entails extended constant throttle uses ashless oils. Think boats, airplanes, rail road engines, etc.