Gasoline is not a lubricant regardless of the sulfur content. For one thing there isn’t anything the gasoline lubricates in a gas engine unlike the fuel system in a diesel.
And wear scar? Yeah.
And wear scar? Yeah.
Upper cylinder lubricant which best brand?
- Thread starter RaRa
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then tell me why in the conclusion they mention this "As for gasolines produced under the traditional technology without the addition of ethyl alcohol, their antiwear properties are at acritical level" What is at a critical level here? I copied the bold-font sections word by word from the paper
Sounds like a lot of hoopla to me.
Gdi uses a high pressure fuel pump and some of those designs fail from lack of lubrication. However I don't think anything lacks lubrication in a modern 4 cycle engine. An upper cylinder lubricant does help with sticky valves though
I think we've proven that the "upper cylinder lubrication" portion is a complete myth....and I know your stance on this...but do you think there is any chance that a small amount of this stuff could reduce fuel pump and or injector wear? I understand some pumps can run a lot of miles without issues and others die early (personally mine the sending unit rusted out at 160k miles with the pump still working fine) but can you explain why it is or isn't possible that a small dose could help the fuel pump or injectors?
...so you take a steel ball and vibrate it on a disc(also made of steel?)....where exactly is this happening in my car? there are roller bearings but they don't vibrate, they roll. the cylinders are being lubricated but not by the fuel.
I did use to put a measured amount of oil(as i recall it was 2 stroke oil, but i forget it was a long time ago) in the twin turbo rotary engine in a Mazda but that was totally different and actually served a purpose there.
As far as these cleaner concentrates, i believe they add UCL because your about to dump a concentrated amount of cleaners and it may wash away the bit of lubricant that's there(motor oil).
I did use to put a measured amount of oil(as i recall it was 2 stroke oil, but i forget it was a long time ago) in the twin turbo rotary engine in a Mazda but that was totally different and actually served a purpose there.
As far as these cleaner concentrates, i believe they add UCL because your about to dump a concentrated amount of cleaners and it may wash away the bit of lubricant that's there(motor oil).
This forum thread is a good read for anyone interested in trying/using upper cylinder lube...
http://www.ls1.com/forums/showthread.php?t=91206
http://www.ls1.com/forums/showthread.php?t=91206
Will MMM in gasoline be a decent upper cylinder lube ?
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Thoughts on upper cylinder lubricants causing varnish? Or even blowby because it doesn't fully combust? I use Lucas or Rislone UCL every fill up which seems to quiet engine so hoping it's not true.
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roller bearings do have sliding contact, especially tapered roller bearings on the ends.
Old thread but wanted to share my own experience with Lucas UCL over a decade ago. It made a noticeable (but probably not measurable) difference on a VAG 1.8T engine that exclusively ran top tier 91 gasoline. I don't know why or how to explain it but the engine simply ran smoother and quieter with no other changes.
In hindsight, it's hard to believe but it was definitely more than a placebo. With that said, I haven't tried it again since I didn't find any data to support its continued use.
In hindsight, it's hard to believe but it was definitely more than a placebo. With that said, I haven't tried it again since I didn't find any data to support its continued use.
Top cylinder oils make the upper cylinders and fuel injectors last longer. Some people take extra care of their equipment, some a little extra care, and others either don't know how and/or don't care.
4WD
$50 site donor 2025
A name brand fuel will contain FM’s, several detergents, corrosion inhibitors, anti-adhesion additives, solvent, demulsifier, markers, etc … On top of that - Techron on the last tank before oil change works for me …
Where do you know this from? I have several old cars, one with nearly 500K on the odometer. Would my fuel injectors and upper cylinders last longer with a UCL? I've never used one.
It depends what the finished oil is made of. The no smoke 2 stroke oils with PIB could actually help in reducing existing carbon buildup. It definitely isn't likely to add deposits.
MolaKule
Staff member
The engine oil lubricates the whole cylinder bore, upper, lower, middle, and bottom surfaces.
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