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

[blsnelling]

Do you have a link? I can't find it.

http://www.ebay.com/itm/Mobil-Racin...740?pt=LH_DefaultDomain_3&hash=item2337450204

 

[Ron660]

Stihl HP Ultra is JASO-FB. The lowest certification on JASO ratings.

Has the JASO rating on the back of the bottle.

 

[Deleted member 83629]

im sure the stihl orange bottle is worse than the ultra.

 

[Ron660]

http://www.ebay.com/itm/Mobil-Racin...740?pt=LH_DefaultDomain_3&hash=item2337450204

Viscosity is almost identical to H1R.

 

[bwalker]

Viscosity is almost identical to H1R.

Got a link for that info?

 

[AKDoug]

View attachment 421383Stihl HP Ultra is JASO-FB. The lowest certification on JASO ratings.
Has the JASO rating on the back of the bottle.

Not quite true. FC and FD do not represent increased lubricity, so it's not fair to say that FC and FD are actually "higher".

JASO FA – original spec established regulating lubricity, detergency, initial torque, exhaust smoke and exhaust system blocking.

JASO FB – improved requirements over FA with regards to lubricity, detergency, exhaust smoke and exhaust system blocking.

JASO FC – lubricity and initial torque requirements same as FB, however far higher requirements over FB with regards to detergency, exhaust smoke and exhaust system blocking.

JASO FD - same as FC, except with far higher detergency requirement.

 

[bwalker]

Not quite true. FC and FD do not represent increased lubricity, so it's not fair to say that FC and FD are actually "higher".

JASO FA – original spec established regulating lubricity, detergency, initial torque, exhaust smoke and exhaust system blocking.

JASO FB – improved requirements over FA with regards to lubricity, detergency, exhaust smoke and exhaust system blocking.

JASO FC – lubricity and initial torque requirements same as FB, however far higher requirements over FB with regards to detergency, exhaust smoke and exhaust system blocking.

JASO FD - same as FC, except with far higher detergency requirement.

Cleanliness is very important. If lubricity were the only issue we would all be running castor oil at 16:1.

 

[AKDoug]

Honestly, I take dozens of saws a month apart that only run Stihl Ultra. I can't imagine an oil burning much cleaner. It stinks, but I've never heard anyone complaining of how clean Ultra is.

BTW, it says "meets JASO FB" it doesn't show that it actually has been tested. The only Stihl oil that I know has been tested was Stihl Super as of April 1 2015.. and it scored FD.

http://www.jalos.or.jp/onfile/pdf/2T_EV_LIST.pdf

 

[KG441c]

Not quite true. FC and FD do not represent increased lubricity, so it's not fair to say that FC and FD are actually "higher".

JASO FA – original spec established regulating lubricity, detergency, initial torque, exhaust smoke and exhaust system blocking.

JASO FB – improved requirements over FA with regards to lubricity, detergency, exhaust smoke and exhaust system blocking.

JASO FC – lubricity and initial torque requirements same as FB, however far higher requirements over FB with regards to detergency, exhaust smoke and exhaust system blocking.

JASO FD - same as FC, except with far higher detergency requirement.

What exactly is exhaust system blocking requirements referring to?

 

[KG441c]

Looks like Stihl has experienced and expect carbon buildup with their product and oil?

 

[Ron660]

Not quite true. FC and FD do not represent increased lubricity, so it's not fair to say that FC and FD are actually "higher".

JASO FA – original spec established regulating lubricity, detergency, initial torque, exhaust smoke and exhaust system blocking.

JASO FB – improved requirements over FA with regards to lubricity, detergency, exhaust smoke and exhaust system blocking.

JASO FC – lubricity and initial torque requirements same as FB, however far higher requirements over FB with regards to detergency, exhaust smoke and exhaust system blocking.

JASO FD - same as FC, except with far higher detergency requirement.

JASO-FA has been eliminated. Only FB - FD are current standards. True, FB - FD meets the minimum lubricity standard but not in detergency which represents engine "cleanliness" and evaluates piston ring sticking. To meet the Detergency tests for FB and FC it's a one hour test. To meet FD, it's a 3 hour test. Why use a "dirtier" oil in an expensive pro model saw......especially a ported one. Let's compare prices of the Stihl HP Ultra oil (JASO-FB) and the oil I'm using Motul 800 off-road (exceeds JASO-FD). Cheapest price I saw on Amazon this morning for a 6-pack of 2.6oz Stihl HP Ultra was $14. One liter of Motul was $16. That would equal over $30 a liter for Stihl oil! That's nearly double the price for a lower JASO certified oil.

 

[KG441c]

http://www.arboristsite.com/communi...3/?temp_hash=fff7e3ba418a974bfea8dadf99cdaded
This is the supporting link to Ron660s statement

 

[bwalker]

What exactly is exhaust system blocking requirements referring to?

Exhaust port blocking. Test is ran at something like a 5-10:1 ratio .

 

[bwalker]

JASO-FA has been eliminated. Only FB - FD are current standards. True, FB - FD meets the minimum lubricity standard but not in detergency which represents engine "cleanliness" and evaluates piston ring sticking. To meet the Detergency tests for FB and FC it's a one hour test. To meet FD, it's a 3 hour test. Why use a "dirtier" oil in an expensive pro model saw......especially a ported one. Let's compare prices of the Stihl HP Ultra oil (JASO-FB) and the oil I'm using Motul 800 off-road (exceeds JASO-FD). Cheapest price I saw on Amazon this morning for a 6-pack of 2.6oz Stihl HP Ultra was $14. One liter of Motul was $16. That would equal over $30 a liter for Stihl oil! That's nearly double the price for a lower JASO certified oil.

OEM oil is definatly a profit center for the major OPE companies.

 

[KG441c]

OEM oil is definatly a profit center for the major OPE companies.

I agree 100%.

 

[hacknstack]

Brad, I see you can still by Mobil 2R on ebay shipped from the UK. That's the ultimate!

Is this NOS, or is it still in production overseas? I'd like to try it but if the supply is close to exhaustion I'll have to find something else anyway.

 

[KG441c]

I agree 100%.

Bwalker how do u like the citgo supergard air cooled? I see they have one thats fc rated and one thats registered citgo supergard air cooled thats fd rated

 

[super3]

Mobil is ####in up. Bring back 2t dammit!

 

[KG441c]

http://www.arboristsite.com/communi...9/?temp_hash=5b85eacf0dd94cdbcb25759253419124

 

[KenJax Tree]

No Maxima oil on the list