110 leaded race gas vs 100 unleaded

[motorhead445]

Im gonna run the 1/8th mile track today its test & tune night.They have 110 leaded race fuel,is it save to run this in'87 Turbo-T?Ive always ran Sunoco 100 octane with no problems.Will this 110 make a differance or just foul up sensors&plugs?Or just stick with 100 octance?

 

[BLACK6PACK]

Do you have a scan tool or a knock gauge? The 110 will allow you to run a few more pounds of boost than the 100, but it will kill an 02 sensor in short order. Without a scan tool, it would be hard to make sure your getting the advantage of the 110. Also if you still have a cat converter, don't run the 110 it will plug the cat real quick too. 02 sensors are cheap if bought in a multipack, cat converters are not.

 

[1badTTA]

I have run a blend of 91octane unleaded and 115octane leaded at the track 3 times so far, and unless you do it every weekend, I don't think it really will kill your O2 sensor. I haven't had to change mine yet and my O2 cross counts are building up just fine, not at all lazy.

 

[BLACK6PACK]

Mine would last 1 night at the track with pure 116 octane. With a weak mix it seamed to last a little while. If I use leaded gas the 02 sensor gets thrown in the trash the next day. Well, it used to, now I run the ME so I don't have to bother with 02 sensors.