It seems like upper cylinder lubricant works!
 

I tried the lucas in my old 6mt maxima and had great results. I assumed the great mileage results were from the timing advance, gab mod etc.
Now ive started adding it to my 6mt g sedan and wow!
Not only have i noticed better throttle response and smoother idle, im 4 tanks in and with unchanged driving habits my combined mileage has increased from 22.6 to 24.5mpg. Might be worth a try guys.....

It is in your imagination, dude. Don't you think manufacturers would put it in their cars to get pass CAFE easier?

Physics suggests otherwise. Modern fuels have had lubrication removed more and more to adhere to government environment regulations.
Doing 60/40 hwy city, occaisional redline pulls and 75ish with the ac on hwy and getting over 450 miles per tank out of a 6mt is proof for me.

Numerous hwy trips in my old maxima with 220000 miles+ on the odo using this i got 530+ out of a 18 gallon tank

Congratulations.

Just thought id share my experience,
Using in quantities im saving 8$+ per tank. Also the preventative maintenance of it all makes it a good idea, especally for possible long term ownership

Never used it and any additives are a waste of money in my opinion

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I use regular instead and it works great.

Telcoman

I worked in an Auto parts store a for three years while in college.

I've sold and used almost all of the major additives.
Almost all of them are junk.

We did sell a ton of it when gas was $4 a gallon though....

Searching "upper cylinder lubricant" and seeing some of the physical preventative maintenance benefits helps.
That was combined mileage, filled up sunday, did approx 100mi strictly hwy and my cpu read 30.9 mpg. While doing 75 mph. Now after the work stop n go commute im still getting 26.7

Did you reset and roll a few miles on highway only to get that 29.1? I don't think it's possible to see 29+ in mixed driving in these cars. I'd do the 87, but with the heat, I don't care for all the timing that gets pulled by the ECU.

What 87, you mean regular gas? This is a performance engine designed for 93. It even prints clearly in the manual. Why would you handicap this engine for just saving a few dollars? I have hard time to understand the logic from some people here.

You say almost all of them are junk...

Anything actually worth a damn?

Ha, yes...but I've never run 87 because the owners manual calls for premium so it's been on a steady diet of 93 octane for the last 5 years. :) 87 would knock in the Texas heat with 11.0:1 compression and the ECU would retard the timing a lot.

I use the 93 gas nearly EVERYTIME I fill up. Only reason I ever use the mid-grade is if I happen to stop at a station that has ridiculously high prices for the 93 vs other stations in my town.

Manual calls for 93....I love my car....so I run the 93.

Do you believe everything you read?
If you advertise a vehicle engine has a certain HP then in order to confirm that statement then you may have to use a higher octane gasoline.
Do I care how much HP my engine has?
NO! I don't give a fvck. It gets me to work and on long road trips just fine
Both my current and previous Infiniti's have been great cars. Best I've ever owned.

Yes regular 97 octane! Been using it in every vehicle I've ever owned and never had a problem with it. Unless you are engaging in competition racing spending extra money on premium gasoline is a waste of money IMHO.
It is not a few dollars but thousands over time.

My 06 G35 at trade in time. Never a problem using 87 octane

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Never a problem using regular 87 in my current 2012 G37S

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I reset the vehicle computer every fill up

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Four fill ups from NJ to Florida on the way down and four fill ups on the return. The lower MPG on two fill ups in Florida was short trips in Florida mostly by the wife. It runs fine on regular both in Florida heat and New Jersey cold.

Another round trip to Florida from NJ all on 87 Octane

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In driving over 230k miles on both of my Infiniti's all on 87 octane except for a one month test of 91 and a one month test of 93 on my previous 06 G35 I have not had any problems using regular 87 octane.

I purchase almost all of my local gas here.

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Telcoman

Wow you're pretty lame for bragging about using 87 octane.

You're so proud of it that you even put it in your signature like it's a mod. Dated and priced. What a loser