Krex - Graphite Engine Oil Additive
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Krex - Graphite Engine Oil Additive
I searched and did not find anything about this here so..
Has anyone ever used this in a rotary? A graphite engine oil additive.
I know with the design of the rotary it is especially crucial to lubricate the seals. We all know (I think..) that today's modern gasoline with all the detergents that are designed to keep a piston engines valves clean robs the rotary of its lubricant in the combustion chamber, perhaps even the other two faces of the rotor simultaneously. So with pre-mix and the use of oil additives such as this can we ensure a long lasting, reliable rotary?
Has anyone ever used this in a rotary? A graphite engine oil additive.
I know with the design of the rotary it is especially crucial to lubricate the seals. We all know (I think..) that today's modern gasoline with all the detergents that are designed to keep a piston engines valves clean robs the rotary of its lubricant in the combustion chamber, perhaps even the other two faces of the rotor simultaneously. So with pre-mix and the use of oil additives such as this can we ensure a long lasting, reliable rotary?
#2
2009 RX-8 Touring
Considering rotaries already have trouble accumulating carbon deposits from incomplete combustion of oil used to lubricate the rotor seals, I'm gonna take a wild leap and say that intentionally adding more carbon to your oil probably won't help the engine run better. In fact, since the rotor seals are lubricated by a pump that drips oil into the combustion chambers via a set of small holes, using a solid additive that might clog the holes is about the worst thing you can do.
The detergents in modern gasoline enhance its ability to dissolve coke deposits, not liquid oil. Gasoline by itself can dissolve liquid oil just fine; that's why it's a really bad thing to run an engine with a malfunctioning ignition system, because unburned gasoline will smear around and weaken the oil film on all the seals, not just the seals closest to the combustion chamber.
Just use good oil and call it a day. I use a Group 5 synthetic oil, which has polar molecules that allow it to adhere more strongly to metal surfaces. Makes a sulfur smell when the engine is cold, but other than that it works great.
The detergents in modern gasoline enhance its ability to dissolve coke deposits, not liquid oil. Gasoline by itself can dissolve liquid oil just fine; that's why it's a really bad thing to run an engine with a malfunctioning ignition system, because unburned gasoline will smear around and weaken the oil film on all the seals, not just the seals closest to the combustion chamber.
Just use good oil and call it a day. I use a Group 5 synthetic oil, which has polar molecules that allow it to adhere more strongly to metal surfaces. Makes a sulfur smell when the engine is cold, but other than that it works great.
Last edited by fyrstormer; 07-09-2012 at 10:54 PM.
#3
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I can't find the MSDS sheet, that will tell us what it really is. It's odd that it is so hard to find.
Krex Graphite Engine Lubricant | Krex Inc.
Krex Graphite Engine Lubricant | Krex Inc.
Last edited by 9krpmrx8; 07-09-2012 at 10:57 PM.
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Arco introduced something similar in the early 1980s resulting in big problems for some. It was withdrawn from the market. Arco Graphite Oil... - Ford Truck Enthusiasts Forums
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Arco introduced something similar in the early 1980s resulting in big problems for some. It was withdrawn from the market. Arco Graphite Oil... - Ford Truck Enthusiasts Forums
#13
Caution... I have not used this particular produce, however I have used something similar.
It plugged the oil filter, starved the engine of oil lubrication and pressure and shortly there after the engine grenaded.
Krex seems to stand behind thier produce..
Krex Graphite Engine Lubricant can further differentiate services by providing customers with the Krex 10 Year / 200,000 Mile Limited Engine Lubrication Warranty. For complete details, please contact us or view the complete Krex 10 Year / 200,000 Mile Limited Engine Lubrication Warranty Term & Conditions.
WHAT THIS WARRANTY COVERS: For a period of 10 years or until 200,000 miles are registered on the odometer of your new vehicle, whichever occurs first, this Warranty will cover
the failure or excessive wear of the following engine parts of your new vehicle: Crankshaft and Bearings, Oil Pump, Internal Timing Gears and Chain, Camshaft and Bearings,
Valve Lifters, Rocker Arms and Pivots, Push Rods, Valve Guides, Pistons and Rings, Wrist Pins and Bushings, Cylinders, Connecting Rods, Distributor Drive Gear, Turbo
Bearings, Cylinder Lining and Bore, Balance Shafts, and Valve Stems. During the term of this Warranty, if a covered engine part fails or wears excessively due to a lubrication
failure, return the vehicle to the issuing dealership, present this Warranty and your repair orders showing the vehicle’s service history, and the covered parts will be repaired or replaced
without charge up to the Limit of Liability.
LIMITS OF LIABILITY:
It plugged the oil filter, starved the engine of oil lubrication and pressure and shortly there after the engine grenaded.
Krex seems to stand behind thier produce..
Krex Graphite Engine Lubricant can further differentiate services by providing customers with the Krex 10 Year / 200,000 Mile Limited Engine Lubrication Warranty. For complete details, please contact us or view the complete Krex 10 Year / 200,000 Mile Limited Engine Lubrication Warranty Term & Conditions.
WHAT THIS WARRANTY COVERS: For a period of 10 years or until 200,000 miles are registered on the odometer of your new vehicle, whichever occurs first, this Warranty will cover
the failure or excessive wear of the following engine parts of your new vehicle: Crankshaft and Bearings, Oil Pump, Internal Timing Gears and Chain, Camshaft and Bearings,
Valve Lifters, Rocker Arms and Pivots, Push Rods, Valve Guides, Pistons and Rings, Wrist Pins and Bushings, Cylinders, Connecting Rods, Distributor Drive Gear, Turbo
Bearings, Cylinder Lining and Bore, Balance Shafts, and Valve Stems. During the term of this Warranty, if a covered engine part fails or wears excessively due to a lubrication
failure, return the vehicle to the issuing dealership, present this Warranty and your repair orders showing the vehicle’s service history, and the covered parts will be repaired or replaced
without charge up to the Limit of Liability.
LIMITS OF LIABILITY:
Last edited by Digger1911; 07-10-2012 at 12:05 PM.
#14
Rockie Mountain Newbie
I bet they will tell you NOT to use those products in your engine.
In fact, I bet if you looked at your owners manual, it would tell you right there that you don't need to use any extra additives other than the engine oil that meets the required specs for each car.
Stop wasting your money at the dealer on that crap.
If FoMoCo finds out you used that crap during a warranty claim, they're going to deny it.
BC.
#15
2009 RX-8 Touring
2. Are you really comparing a big American V8 to a rotary engine? There are more than slight differences in the designs of the two engines; the tolerances on a rotary engine are an order of magnitude smaller than the tolerances on a piston engine (especially a large V-engine). I already explained why KREX is a bad idea for an engine that lubricates itself by dripping oil into the combustion chamber. Did you actually read my post?
#16
2009 RX-8 Touring
In fairness, they also make the injectors run at maximum fuel pressure to blast out any goop that's stuck in them. It's a slightly more complicated procedure that Joe User wouldn't know how to do.
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Right. I literally just watched a tech perform this service this morning on a Lincoln Navigator, there is a special service tool that is used in place of the fuel pump. The tool is filled with cleaner, pressurized with shop air.
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1. KREX is not a liquid, it's a colloid. That means it's a solid powder suspended in a fluid, like muddy water or dusty air. No matter what they added to the oil to make the graphite float instead of settling out, the additive will break down eventually and the graphite will settle out and clog things up.
2. Are you really comparing a big American V8 to a rotary engine? There are more than slight differences in the designs of the two engines; the tolerances on a rotary engine are an order of magnitude smaller than the tolerances on a piston engine (especially a large V-engine). I already explained why KREX is a bad idea for an engine that lubricates itself by dripping oil into the combustion chamber. Did you actually read my post?
2. Are you really comparing a big American V8 to a rotary engine? There are more than slight differences in the designs of the two engines; the tolerances on a rotary engine are an order of magnitude smaller than the tolerances on a piston engine (especially a large V-engine). I already explained why KREX is a bad idea for an engine that lubricates itself by dripping oil into the combustion chamber. Did you actually read my post?
Last edited by ARC.4.LYFE; 07-10-2012 at 12:52 PM. Reason: quoted wrong user
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To set the record straight.
I never recommended using this in a rotary or compared it to a V8. I just posted the product to see what people here thought about it in conjunction with a rotary.
Some good input here so far.
I never recommended using this in a rotary or compared it to a V8. I just posted the product to see what people here thought about it in conjunction with a rotary.
Some good input here so far.
#22
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I would HIGHLY recommend that you contact Ford Customer service, and ask them if THEY think these additives are needed in your engine, and what it does to your warranty, if you have an engine failure that you want repaired.
I bet they will tell you NOT to use those products in your engine.
In fact, I bet if you looked at your owners manual, it would tell you right there that you don't need to use any extra additives other than the engine oil that meets the required specs for each car.
Stop wasting your money at the dealer on that crap.
If FoMoCo finds out you used that crap during a warranty claim, they're going to deny it.
BC.
I bet they will tell you NOT to use those products in your engine.
In fact, I bet if you looked at your owners manual, it would tell you right there that you don't need to use any extra additives other than the engine oil that meets the required specs for each car.
Stop wasting your money at the dealer on that crap.
If FoMoCo finds out you used that crap during a warranty claim, they're going to deny it.
BC.
It's amazing the amount of crap service writers try to sell people at dealerships.
I ONLY take the car for oil changes and that's it. And I do it - not because I cannot do an oil change - but because I got an extended warranty through Mazda and want to keep the local dealer happy with service records in case I need engine work in the future.
But all the other crap they always try to sell me when I go for an oil change I always say NO.
#23