PRI-G Gas Treatment PRI-D Diesel Fuel Treatment
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Basically there are two things to remember when it comes to shelf life of PRI. All of our treatments are good for a period of three years after the “heat seal” is broken and exposed to air. A bottle of PRI that has not had this exposure will outlast the bottle it is contained in. We have had bottles sit for ten years that still test fine after the seal is finally punctured.
How long can PRI keep fuel fresh? This depends on the original condition of the fuel. While tests indicate that PRI can keep fuels fresh in many instances for 10 years and more, fuel should be dosed with PRI every 6-12 months for maximum benefit. If your fuel is already in poor condition, not to worry. PRI-D for Diesel, and PRI-G for gasoline have also demonstrated an uncanny capability to restore very old, stale fuels to a refinery fresh conditions.
With adequate dosing and agitation, fuel that is re-treated annually will continue to last indefinitely. We have actually had gas stored for a period of over eight years with only one treatment still test in very good condition, but we do not expect these results or suggest this type of fuel maintenance schedule.
Frequently Asked Questions
Q: Will the use of PRI-G void my engine manufacturer's warranty?
A: No. PRI-G complies with the fuel specification requirements of all engine manufacturers. PRI-G has been extensively tested on both gasoline and Diesel engines by GENERAC, a major manufacturer of gasoline engines and power generation systems - and is GENERAC'S approved and recommended Fuel Treatment. PRI-G does not alter fuel in any harmful way. In fact, PRI-G greatly enhances fuel stability - improving upon the minimum specifications for fuel stability required by many engine manufacturers.
Q: But my engine manufacturer does not recommend the use of fuel additives. Why?
A: Given the fact that literally thousands of fuel additives are offered on the market, engine manufacturers have no way of monitoring or testing the claims of so many products - making it difficult to determine specific products that are safe to use. However, PRI chemistry does not alter any fuel specifications issued by engine manufacturers - specifications by which manufacturers judge whether or not a particular fuel affects safe engine operation. PRI has been safely used in thousands of engine types - from oilfired 50,000 h.p. plus marine Diesel engines to small OHVI gas engines.
Q: Does PRI-G eliminate water from fuel?
A: PRI-G only absorbs small amounts of tank condensation that can occur over a several day period. However, PRI-G does not absorb large amounts of water into fuel. Using a Fuel Treatment chemistry to absorb large amounts of water is not a good idea. Large amounts of water absorbed in fuel can severely damage fuel injectors and fuel injector pumps. It is better to remove water by either draining the tank or by using special water removal filtration systems.
Q: I have fuel that has been sitting in storage for several years. Will PRI-G help make this fuel better?
A: Yes. When thoroughly blended with fuel, PRI-G will restore even the most degraded fuels to a refinery-fresh, usable condition - provided the stored fuel does not contain metals or foreign chemistries not compatible with refined fuel. Although the fuel will be restored to usable specification, PRI-G does not restore the fuel to original color.
Q: How long will PRI-G preserve fuel freshness?
A: This depends on the initial quality of the fuel. Independent test data shows that PRI-G can preserve most gasolines for many years. However, it is recommended that PRI-G be applied to the fuel at least every 9 - 10 months.
Q: Should I use a double or triple dose of PRI-G for really tough fuel?
A: No. PRI-G is fully effective at the recommended dose rate.
Q: What if I accidentally over treat with PRI-G - will it hurt anything?
A: No. But it will be wasting money.
Q: I understand that PRI-G prevents carbon build-up. Does it remove old carbon from my engine components?
A: In older engines, PRI-G only removes the more newly formed, soft carbon. PRI-G does not remove hard carbon deposits. First, it is never wise to use any chemistry that removes hard carbon deposits in older engines. The hard carbon actually fills in worn areas in upper ring areas and valve seats. Removal of hard carbon in these cases can result in poor component-to-component tolerances - causing piston slap, poor valve seating, and other problems. However, PRI will still remove deposits from injector tips.
Q: Will PRI-G eliminate tank sludge?
A: PRI-G will eliminate tank sludge when consistently used. PRI-G's powerful dispersants are the same chemistries used to dissolve heavy, asphaltene laden sludge in the most challenging heavy fuel oils. The length of time it takes for PRI-G to remove this sludge is dependent upon the degree of sludge contamination. Hence, complete sludge removal may take just a few days - or a few months. For extra-heavy amounts of tank sludge, we recommend a proper tank cleaning, followed by filling with PRI treated fuel to prohibit future sludge formation.
Q: If PRI chemistry is so effective, why don't refiners put it into their fuel at the pump?
A: Refiners do put very small amounts of additives into fuel. However, gasoline marketing is highly competitive and refiners make every effort to offer fuel at the least cost. The addition of additives at their most effective dosage rates would result in higher prices - and petroleum marketers would risk losing market share.
Q: We have much cleaner gasoline today. Why would I want to use an additive?
A: By comparison, gasoline today is initially much cleaner than gasoline sold 10 or 20 years ago when it is first produced. However, today's fuels are less stable today because they are produced through cracking processes versus the less efficient "straight-run" processes used years ago. As a result, today's fuels deteriorate at much faster rates - resulting in excessive carbon build-up in your engine. Given the varying length of time it takes for fuel to be consumed after refining, it is wise to freshen fuels every tankful with PRI-G to ensure maximum combustion and performance.
Q: Isn't it costly to use PRI-G every tankful?
A: No. Because the use of PRI-G results in more efficient combustion, fuel economy is greatly improved. The fuel savings more than pays for the cost of treatment. In the long-term, the capability of PRI-G to prevent carbon deposits actually extends engine life - since it is the hard carbon with untreated fuels that accelerates abrasion and wear.
Q: Is it okay to use PRI-G with other additives?
A: PRI-G effectiveness will not be affected by other additives. However, PRI-G is a multifunctional product designed to overcome all fuel issues. There is no reason to use any additional additives when PRI-G fully does the job.
Q: Why doesn't PRI-G boost the octane rating of gasoline?
A: PRI-G uses a safer, more effective method to improve power and performance.
Q: How do I dose PRI-G to my tank?
A: When adding PRI-G for the first time, estimate the entire tank capacity and treat for that amount. Put PRI-G into tank just prior to fueling when tank is 1/4 to 1/2 full. Immediately add fuel. On follow-up dosing, simply estimate the amount of fuel to be added, treat the tank, then immediately add fuel. PRI-G must be added at the time of fueling to work properly. If you put PRI-G into the tank, drive to the pump, then add fuel, PRI-G will have been fully activated only with the fuel it originally touched. For consumers, PRI-G bottles have E-Z measuring dosing reservoirs to permit accurate dosing. For tank sizes of 5,000 to 10,000 gallons, it can be added directly. For tank sizes greater than 10,000 gallons, online dosing is recommended.
Q: Is PRI-G like these engine oil treatments that coat parts?
A: No. PRI-G affects only fuel behavior. PRI-G contains no solid materials and does not coat engine parts.
Q: Are any of these oil treatments effective?
A: We do not evaluate or test engine oil treatments.
Q: Aren't all gasolines essentially the same?
A: No, not at all. Even when processed by the same refiner, gasoline quality can vary considerably day-to-day depending on the crude oil feedstock used and the processing controls implemented at the refinery.
Q: I have a very high mileage engine and I'm not getting better performance with PRI-G.
A: PRI-G is not a "mechanic in a bottle" and can't replace worn rings, cylinder liners, or worn out injectors. However, PRI-G is recommended for operators of older equipment in that PRI-G will keep fuel tanks and fuel delivery systems clean, minimizing problems.
Q: I have about 100,000 miles on my engine. Is it too late to start using PRI-G to prevent wear?
A: No. PRI-G can add years to "middle-aged" engines by stopping excessive wear and carbon build-up.
Q: Is PRI-G good for two-stroke engines, like marine outboards, lawnmowers, jet skis and motor bikes?
A: PRI-G should be mandatory for use in two-stroke gasoline engines. Carbureted engines are especially wasteful of fuel and prone to produce heavy carbon. It is much better to use PRI-G in every tank to prevent carbon build-up and more complete combustion than it is to run a harsh solvent cleaner through the engine to "blow-out" carbon. The latter approach presents a risk of loose carbon lodging in an upper ring area, causing engine damage. PRI-G is also great for EFI systems and the latest direct injection systems.
Q: I've been using PRI-G for many months with good results. However, this summer PRI-G doesn't seem to be giving me the fuel economy improvement I usually get. What's the problem?
A: There are two reasons. First, gasoline expands in hotter weather and fuel economy consequently drops. Without PRI-G, you can expect a greater fuel economy loss. Secondly, engines work harder in the summer, operating under higher heat while providing horsepower to run air conditioning compressor units. PRI-G helps improve fuel combustion and efficiency when your engine needs it most.
Q: I have had a vapor locking problem in hot weather. Will PRI-G do anything for this?
A: Yes. Many of our PRI-G clients report they no longer have vapor locking problems.
Q: In my area, we have oxygenated fuels that contain MTBE or ETBE. Is PRI-G compatible with these oxygenate additives?
A: PRI-G is compatible both with oxygenates and the other additives provided by retail gasoline marketers. In fact, refiners report that oxygenated fuels are about three percent less efficient than prior formulas. Some consumers report even greater reductions in fuel efficiency with these fuels. By improving combustion, PRI-G helps provide better fuel economy when oxygenated fuels are your only choice.
Q: What's the story on oxygenated fuels? Are they good or bad?
A: There is a considerable amount of information available on oxygenated fuels on the World Wide Web. We suggest you browse the web and research the issues regarding these fuels.
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