Jump to content

Nominations for Tractor of the Month
Garden Tractors and Parts on eBay



Photo
- - - - -

Best Octane Gas for Cub Cadet 123?


  • Please log in to reply
7 replies to this topic

#1 Boz1200 OFFLINE  

Boz1200
  • Member
  • Member No: 73065
  • 8 Thanks
  • 7 posts

Posted September 24, 2015 - 05:06 AM

I filled my CC 123 up with 93 octane and then started wondering if that made sense for a tractor that was build 50 years ago. Any thoughts on what is best for these old engines?

If the topic has already been discussed please point me in the right direction.

#2 jabelman OFFLINE  

jabelman
  • Senior Member
  • Member No: 38843
  • 1,472 Thanks
  • 1,134 posts
  • Location: nj

Posted September 24, 2015 - 06:44 AM

I run super in everything

#3 chieffan OFFLINE  

chieffan
  • Senior Member
  • Contributor
  • Member No: 62695
  • 6,168 Thanks
  • 4,512 posts
  • Location: SW Iowa

Posted September 24, 2015 - 06:57 AM

I run super in everything

I do also but I also run a lead substitute or a valve saver product.  When those engines were designed they were build around leaded gasoline.  Unless they have had an overhaul update with new valve seats, etc. I would suggest a lead substitute.



#4 NUTNDUN OFFLINE  

NUTNDUN

    Lost in Cyber Space

  • Admin
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 3
  • 10,266 Thanks
  • 15,618 posts
  • Location: Pennsylvania

Posted September 24, 2015 - 11:37 AM

High 89+ octane with no ethanol would be ideal but the non-ethanol isn't available everywhere. We try to run 93 octane in most of our stuff along with seafoam additive.



#5 Arti OFFLINE  

Arti
  • Senior Member
  • Member No: 11282
  • 1,291 Thanks
  • 963 posts
  • Location: South West Wisconsin

Posted September 24, 2015 - 06:15 PM

87 octane and a cap full of Marvel Mystery Oil here.  I suspect the compression ratio isn't very high in my old motors.



#6 Cat385B ONLINE  

Cat385B

    Therapy CAT

  • Senior Member
  • Contributor
  • Member No: 8002
  • 11,757 Thanks
  • 8,925 posts
  • Location: MN

Posted September 24, 2015 - 06:17 PM

I worry not about the octane, but the corn content. I shoot for 0% ethanol.

#7 Texas Deere and Horse OFFLINE  

Texas Deere and Horse

    RED Wild Hogs, Horses & Deeres

  • Staff Admin
  • Staff
  • -GTt Supporter-
  • Contributor
  • Member No: 1435
  • 14,464 Thanks
  • 15,392 posts
  • Location: East of San Antonio Texas

Posted September 24, 2015 - 06:18 PM

For the last year I have been using 100 octane aviation gas, (Ethanol free) in everything I own and I don't ever have any carb issues anymore. All my Kohlers seem to really like the Avgas. I don't remember if it's leaded or not, will check on next file up.


  • wvbuzzmaster said thank you

#8 Boz1200 OFFLINE  

Boz1200
  • Member
  • Member No: 73065
  • 8 Thanks
  • 7 posts

Posted September 24, 2015 - 08:59 PM

Great thanks for the feedback.




Top