To Q45tech in regards to using ISO-HEET fuel treatment.

[mattd1979]

Is there is a way that you could give me in detail what exactly ISO-HEET does for the fuel injectors? I ask because I want to explain to somebody about the reason behind using the additive and you are the best person to ask. I would like to print out the details and give to him to read. He is interested in buying one of the Q45s that my Mom owns for his niece and he and his wife are currently living with my Grandmother and he is using her car to go to work. Her car by the way is a 1992 Maxima GXE. I replaced 3 injectors in her car about 3 months ago and noticed that other then the color, they looked identical to the early G50 injectors. I told her that she will need to use the fuel additive from now on in every tank to help slow the process of the damaging effects of the ethanol and my Grandmother told me that he says that If he continues to add the ISO-HEET every fill-up, it will burn holes in the pistons. I told her that you could if you ran straight alcohol fuel all the time. Anyway. I want him to understand why we have to do this with our Infinitis and why I am asking if you can do this for me and I will print it out to show him.

Thanks again

Matt
Modified by mattd1979 at 8:24 PM 7/29/2009

[Q45tech]

IsoHeet is just 99% isopropyl Alcohol and like ethyl alcohol it makes a mixture with water.http://www.freepatentsonline.com/438559 ... ki/Ethanol

[mattd1979]

I was hoping that you would explain why you need the ISO-HEET added every fill-up and how the injectors are affected by the ethanol without the use of the ISO-HEET.

[qship96]

You dont.

[mattd1979]

I don't what? I use the ISO-HEET in every fill-up. I thought that was what one was supposed to do. Am I wrong?

I just figured that if he heard it from someone who has a knowledgeable background, then he might listen. Remember now, He thinks that if you use ISO-HEET in every tankful, it will burn holes in the pistons.

[maxnix]

Depends on moisture content in gasoline in your tank. With ethanol, the likelyhood is higher, also with non-Tier 1 brands and older stations with older tanks.

It is a wise precaution. The ethanol will suspend the water molecules and help prevent corrosion and aid in dispersing them as the fuel is burned rather than collecting in the bottom of your tank.

[mattd1979]

OK, so the ethanol that is in the fuel doesn't effect the injectors, only the water that collects in the fuel at the bottom of the tank? I thought that I read somewhere that the ethanol additive had some reaction to the material in the fuel injectors causing the winding in the injector solenoid to pull apart internally. I wondered though how could it affect the internal packing of the injector if there is no actual contact with the packing, only the metal portion.

[maxnix]

The ethanol swells the injector coils. Read a post by TexasOil in this forum.

It also is very hygroscopic. This is what IOS HEET addresses.

[Q45tech]

Iso just holds about 15% more water in suspention than an equal volume of ethanol that's all nothing more.

So if you have some phase shifted wayer in a tank of E10 the Iso can absorse up to 6 ounces of addition water depending on the fuel temperature.

Whether the water in E10 is suspended or not and how much is, is purely a function of changing fuel temperatures.

If you have 10 gallons of E10 that means there is 1 gallon of ethanol +- some water. Supposed to be less than 1% in ethanol < 1.28 ounces of water. The problem is the ethanol absorbs extra moisture from air just like brake fluid when you open gas cap or as the evaporation system cycles.

As you are filling the tank extra moisture gets into tank, over and above what got in at gasoline station as the fuel sat in underground tanks,

New stations with new tanks and fast turnover are the best.

[Q45tech]

Brand new fuel filters can hold half their volume in water. Unfortunately the volume is only enough for an ounce maximum.

With that fact in mind I would change oem fuel filters every 6 months or 7500 miles and weigh the new vs blown out old units to see how much water and dirt I was buying.

Modern cars have gone to returnless system to avoid this and other E10 problems.

[Infinitiguy19]

So then the ideal new car (Or Q45-50) would have to have a returnless system with top feed injectors to be 99.99999% E10 (Crap gas) proof?

I don't mind weiging the old VS new fuel filter to see the differnces in Massachusetts gasoline. But to blow out all that the fuel filter has caught is beyond me.