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Polaris Highlifter Discuss the new Polaris Highlifter 850 and Highlifter 1000

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post #1 of 7 (permalink) Old 03-15-2019, 07:47 PM Thread Starter
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VP Race Fuel

Anyone using VP race fuel in their Polaris Highlifter? If so what kind?
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post #2 of 7 (permalink) Old 03-16-2019, 06:27 AM
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I was using VP Racing 94 octane SEF (small engine fuel) in all my seasonal engines, but we recently got a new Casey's General Store and they offer 91 octane ethanol free gas, so I am now using Casey's fuel.

I tried VP Racing T4 100 octane in my CRF250, but the octane was too high - caused a loss of power and the exhaust ran exceedingly hot due to the fuel not being completely burned before the exhaust valve opened. I used up what I had purchased by mixing the T4 with 87 octane (ethanol free) farm gas - mixed 2 quarts of T4 with 2 quarts of 87 octane to get an appx. 93.5 octane mixture - Honda specified using 93 or higher octane - through experimentation I determined my engine began to lose power above 94.5 octane - that engine is happy with Casey's 91 octane.
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2006 Trailboss 330
2002 Sportsman 90
2005 TRX400EX (FOR SALE)
2003 LT-Z400 (needs engine work & is for sale)
2004 CRF250X
1971 Triumph 650 Bonneville (has 5 original miles)
1972 Triumph 650 Bonneville (undergoing restoration)
1979 Honda CBX (6 cylinder)
1970 Kawasaki G3SS 90cc Bushmaster
1976 Suzuki RE5 Rotary (not running & FOR SALE)
1981 Kawasaki KZ305-A
1981 Suzuki GS450T (undergoing repair & will be for sale when done)
1982 Kawasaki KZ750-H (FOR SALE)
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post #3 of 7 (permalink) Old 03-16-2019, 06:33 AM Thread Starter
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Quote:
Originally Posted by latebird View Post
I was using VP Racing 94 octane SEF (small engine fuel) in all my seasonal engines, but we recently got a new Casey's General Store and they offer 91 octane ethanol free gas, so I am now using Casey's fuel.

I tried VP Racing T4 100 octane in my CRF250, but the octane was too high - caused a loss of power and the exhaust ran exceedingly hot due to the fuel not being completely burned before the exhaust valve opened. I used up what I had purchased by mixing the T4 with 87 octane (ethanol free) farm gas - mixed 2 quarts of T4 with 2 quarts of 87 octane to get an appx. 93.5 octane mixture - Honda specified using 93 or higher octane - through experimentation I determined my engine began to lose power above 94.5 octane - that engine is happy with Casey's 91 octane.
That’s awesome! I’m using VP c111 in my Highlifter 1000. I have that tune from RVS with that Dyno plug in play reflash. Waiting for the weather to change so I can go for a rip
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post #4 of 7 (permalink) Old 03-17-2019, 09:50 AM
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Here in central Florida, all I'm finding is regular 87 octane non ethanol, I'd love to find some 91 or 93 octane non ethanol. We have av gas for all the air boats, but neither my Harley or the Polaris like the av gas, they run great wide open, but spit and spatter at regular throttle openings, and the sensors don't like the whatever residue it leaves behind. I've been thinking about the racing fuel alternative, but the premium is easy and fast to get from the pumps.

must modify
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post #5 of 7 (permalink) Old 03-17-2019, 10:00 AM
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Quote:
Originally Posted by gearheadesw1 View Post
Here in central Florida, all I'm finding is regular 87 octane non ethanol, I'd love to find some 91 or 93 octane non ethanol. We have av gas for all the air boats, but neither my Harley or the Polaris like the av gas, they run great wide open, but spit and spatter at regular throttle openings, and the sensors don't like the whatever residue it leaves behind. I've been thinking about the racing fuel alternative, but the premium is easy and fast to get from the pumps.
87 octane is all that is required in most Polaris products (consult the owners manual for your vehicle) - 91 is fine to run with just a very slight loss of performance. To the best of my knowledge, av gas is higher than 93 octane and may be leaded. Your engine will not run right and will have a very high exhaust temp. with a fuel higher than 93 octane - it could cause engine damage from running too high an octane fuel.

87 non-ethanol should be perfect for you engine - here in central IL all the non-ethanol I find is 91 octane and while my CRF calls for 93 or higher, I have found by experimentation that anything above 94.5 causes a loss of power and it performs perfectly with 91 octane.
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2006 Trailboss 330
2002 Sportsman 90
2005 TRX400EX (FOR SALE)
2003 LT-Z400 (needs engine work & is for sale)
2004 CRF250X
1971 Triumph 650 Bonneville (has 5 original miles)
1972 Triumph 650 Bonneville (undergoing restoration)
1979 Honda CBX (6 cylinder)
1970 Kawasaki G3SS 90cc Bushmaster
1976 Suzuki RE5 Rotary (not running & FOR SALE)
1981 Kawasaki KZ305-A
1981 Suzuki GS450T (undergoing repair & will be for sale when done)
1982 Kawasaki KZ750-H (FOR SALE)
1989 Honda VT1100C
2007 Vectrix VCTX Electric Scooter
1965 Montgomery Ward 3 1/2 HP Tecumseh Mini Bike
1970 Triumph T25 250cc Trailblazer
1968 Triumph 250cc Flat Tracker

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post #6 of 7 (permalink) Old 03-17-2019, 01:53 PM
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Quote:
Originally Posted by latebird View Post
Quote:
Originally Posted by gearheadesw1 View Post
Here in central Florida, all I'm finding is regular 87 octane non ethanol, I'd love to find some 91 or 93 octane non ethanol. We have av gas for all the air boats, but neither my Harley or the Polaris like the av gas, they run great wide open, but spit and spatter at regular throttle openings, and the sensors don't like the whatever residue it leaves behind. I've been thinking about the racing fuel alternative, but the premium is easy and fast to get from the pumps.
87 octane is all that is required in most Polaris products (consult the owners manual for your vehicle) - 91 is fine to run with just a very slight loss of performance. To the best of my knowledge, av gas is higher than 93 octane and may be leaded. Your engine will not run right and will have a very high exhaust temp. with a fuel higher than 93 octane - it could cause engine damage from running too high an octane fuel.

87 non-ethanol should be perfect for you engine - here in central IL all the non-ethanol I find is 91 octane and while my CRF calls for 93 or higher, I have found by experimentation that anything above 94.5 causes a loss of power and it performs perfectly with 91 octane.


Yeah, I thought that the octane rating for the Sportsman xp1000 87, but also thought that the premium fuel has less ethanol, more detergents and other additives (?), that help the fuel last longer in the machine. I understand the higher octane for slower burn for higher compression engines, to avoid detonation, still burning in the header pipe, no need for it in lower performance engines. Just looking for an easy way to keep the mud bike fueled up, and not kill it.
My bile does indeed still run hot, I will take your advice, and buy the correct octane, run it and see what the difference is. We can buy a ethanol delete additive for the fuel, can't we?

must modify
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post #7 of 7 (permalink) Old 03-17-2019, 08:56 PM
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Can't delete ethanol - once added, it stays, but if it combines with water, it will separate from the gas - Ethanol Equalizer by Liquid Performance is the only product that I have found and tested that prevents ethanol from combining with water and separating from the gas.

2006 Trailboss 330
2002 Sportsman 90
2005 TRX400EX (FOR SALE)
2003 LT-Z400 (needs engine work & is for sale)
2004 CRF250X
1971 Triumph 650 Bonneville (has 5 original miles)
1972 Triumph 650 Bonneville (undergoing restoration)
1979 Honda CBX (6 cylinder)
1970 Kawasaki G3SS 90cc Bushmaster
1976 Suzuki RE5 Rotary (not running & FOR SALE)
1981 Kawasaki KZ305-A
1981 Suzuki GS450T (undergoing repair & will be for sale when done)
1982 Kawasaki KZ750-H (FOR SALE)
1989 Honda VT1100C
2007 Vectrix VCTX Electric Scooter
1965 Montgomery Ward 3 1/2 HP Tecumseh Mini Bike
1970 Triumph T25 250cc Trailblazer
1968 Triumph 250cc Flat Tracker

Shop Owner and Mechanic with over 50 years experience
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