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Do you use lead substitute in a 74 Scout II?

2021 Arizona International Harvester Rendezvous

eyeluv2fish

Farmall Cub
Joined
Mar 29, 2004
Messages
7
Points
0
Location
Fresno, CA
I just picked up a 74 Scout II with a 345. When I pulled into the gas station the other day it occured to me that I might should use leaded gas. I checked the owners manual and it clearly says use leaded gas. However, I asked a couple of binder buddies about it and they say it doesn't matter as long as you use high octane gas.

To lead or not to lead...that is the question... :confused:
 

SCscoutguy

Moderator
Staff member
Moderator
Joined
Jul 25, 2004
Messages
5,281
Points
38
Location
Florence, South Carolina
Your engine has hardened valve seats in it so the unleaded gas wont hurt it. As far as the hight octane stuff I dont see any reason for running it. The SV engines were made to work not to be hot rod's. I have run just regular 87 octane for years in my trucks and they run fine. Semper Fi, John
 

Munchies

High Wheeler
Joined
Oct 19, 2003
Messages
1,462
Points
36
Location
Heidelberg, Germany
No reason to use lead. No reason to use octane booster. The octane booster will usually hurt your performance unless your pining, (high compression, turbos/supercharger) and IH SV engines are about as low compression as they come.
 
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