661 Oil Test 32:1 vs 40:1 vs 50:1 ?

[Roll Tide]

I'm no expert. But my L65 made it about 35 years on 32:1 before it started losing compression. Granted some years I cut 2 cords and others I've done 20 plus.

Saws built back then were not built to the tolerance saws today are.

 

[Gologit]

The Mother of all oil threads! Cool...

Yeah, Gary would be so proud.

 

[bwalker]

Saws built back then were not built to the tolerance saws today are.

What are the tolerances of today's saws? How about those built back then?

 

[Roll Tide]

I don't know the exact numbers but I know they are tighter then they use to be. Same with car engines hence the different weight oils used today. Are you saying that they could build a saw with the technology they had in the old days that they do now?

 

[bwalker]

Saw technology is nearly the same.. Aircooled piston ported two strokes.
I would think the tolerances being tightened up would be limited by the aircooled part.
Auto engines run lighter oil due to CAFE mostly.

 

[Roll Tide]

I disagree.

 

[KG441c]

Rolltide how many hours does it take to become certified Stihl masterwrench? Ive been wanting to look into this

 

[svk]

Saws built back then were not built to the tolerance saws today are.

What's your point?

 

[Roll Tide]

Rolltide how many hours does it take to become certified Stihl masterwrench? Ive been wanting to look into this

Gold level you have to have three years of tech experience with a stihl dealer, pictures of your shop, your diagnostic tools, and turn in all the above and an application to Stihl. The rest is seat time similar to Silver school just a bit more technical.

 

[KG441c]

Gold level you have to have three years of tech experience with a stihl dealer, pictures of your shop, your diagnostic tools, and turn in all the above and an application to Stihl. The rest is seat time similar to Silver school just a bit more technical.

So what requirement is the silver basic certification?

 

[Roll Tide]

svk, post: 5304116, member: 41967"]What's your point?[/QUOTE]
Different tolerances may demand different oil mixtures.

 

[Roll Tide]

So what requirement is the silver basic certification?

Bronze is the basic certification which is done on the computer, silver is a two day seminar followed by a test.

 

[KG441c]

Bronze is the basic certification which is done on the computer, silver is a two day seminar followed by a test.

Okay thank you. Just trying to get an idea of pursuing it

 

[Roll Tide]

Okay thank you. Just trying to get an idea of pursuing it

Honestly I learned more here then with any of the classes but you do get the hands on and walk thru all your diagnostic tests. It was enjoyable.

 

[svk]

Different tolerances may demand different oil mixtures.

And....

 

[Mastermind]

Honestly I learned more here then with any of the classes but you do get the hands on and walk thru all your diagnostic tests. It was enjoyable.

Tell the truth fapper. You learned the most looking over my shoulder.

 

[bwalker]

And....

Bikes with forged pistons require looser tolerances than those with cast pistons. Oil reccomendations stay the same.

 

[Roll Tide]

And....

This is a thread about different oil mixtures in which I was responding to.

 

[KG441c]

Tell the truth fapper. You learned the most looking over my shoulder.

Wait a minute!!! Ive been askin for a day in that shop to learn something for 1.5 yrs!!!

 

[Roll Tide]

Tell the truth fapper. You learned the most looking over my shoulder.

Honestly yes sir your correct.