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Posted: 5/13/2026 12:42:26 PM EDT
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Those who will use Lucas Extreme Duty oil until they die. Those who haven't yet tried Lucas Extreme Duty. I said it 
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Originally Posted By 556Cliff: Haven’t tried it. I’ve been a long time Break-Free CLP user and I did consider switching fully to Slip2000 for a while before finding out it’s not a very good lubricant compared to Break-Free CLP. CLP is the fake McRib from a frozen bag from Walmart, and Lucas Extreme is a gourmet Wagyu burger. Lucas is heat and carbon resistant and if you lube your weapon for storage and come back to it 3 months later it will still be wet. Unlike CLP. |
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Then there's another. I've been using a 70/30 split of Mobile 1 synthetic oil and Synthetic Dextron / Mercron. Shake well. I bought one quart of each. Mixed the transmission fluid with the oil until the oil turned red. I kept one, gave one to a friend. I haven't used up my quart yet. When I change oil, I put a little in the mobile1 quart. If I see it's not red after I shake it, I take a little from the bottle I bought in 2000, 26 years ago. I did have to buy a bottle of trans fluid. 26 years. My guns are clean, well lubed, and it cost me nothing compared to the concoctions that are made from Mobile 1 oil or other synthetic car oil blends with additives. This wasn't my invention, it was recommended by several top gun builders. |
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Originally Posted By Greg8541: Those who will use Lucas Extreme Duty oil until they die. Those who haven't yet tried Lucas Extreme Duty. I said it Is it synthetic? I've always heard/read that once you start using synthetic you can never use regular lubricants again. Which also prompts the question: what about automatic transmission fluid? Again, heard/read it was good because it is highly rated for heat and friction. |
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Originally Posted By REAPER2502: Is it synthetic? I've always heard/read that once you start using synthetic you can never use regular lubricants again. Which also prompts the question: what about automatic transmission fluid? Again, heard/read it was good because it is highly rated for heat and friction. Here is the data sheet. Lucas Extreme Duty Oil Data Sheet Here is the MSDS composition data. Distillates (petroleum), hydrotreated heavy paraffinic CAS-No.: 64742-54-7 Phosphorodithioic acid, mixed O,O-bis(iso-Bu and pentyl) esters, zinc salts CAS-No.: 68457-79-4 Lubricating oils (petroleum), C20-50, hydrotreated neutral oil based CAS-No.: 72623-87-1 Distillates (petroleum), hydrotreated light paraffinic CAS-No.: 64742-55-8 |
| Never really understood the people that will die on a hill for a brand of gun lube. They all seem to do the same thing to me Breakfree lube and CLP or Mpro7 is all I use. I do understand using stuff rated for certain weather temps. I had to make sure I got one rated for -20. |
What it boils down to is that they fear an effective resistance to their power: So, Left in power=Guns bad, mmmmkay...?, Right in power=Guns good!-thskirk
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Someone gave me Samples of Lucas when they got one of my kits once. I’ve been. Using it ever since I also like this stuff called safari charlies it smells good. this well endowed gal at gun show sold I miss her she never shows up anymore I think of her when I smell it. She used to bring one of her friend holy jeez was that a trap. |
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Originally Posted By Alaskanforfreedom: Never really understood the people that will die on a hill for a brand of gun lube. They all seem to do the same thing to me Breakfree lube and CLP or Mpro7 is all I use. I do understand using stuff rated for certain weather temps. I had to make sure I got one rated for -20. For me it has a lot to do with a lube that doesn't splash in the face when firing suppressed. Stays in place after a lot of firing. Doesn't burn off quickly. Displaces other oils and moisture. Doesn't suck in carbon with the gravity of a super black hole, and is still there lubricating the parts when I grab the weapon after having it sit in storage for months. It's not about dying on a hill for a brand. It's that no other brand has a product that does what it does on the level that it performs. |
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I have been using it for a couple years. It will NOT stay on the bolt months later. About a couple of weeks before it has settled off. I have one ar that I have about 6000 rds through it with no cleaning other than just putting oil on. I took it out yesterday and actually cleaned it. I wanted to see how long it would go without cleaning. The bcg had a very large amount of sludge all over it. But the majority wiped off with a rag. I then blasted the bcg with brake cleaner and then blew off with compressed air. I will say, the oil kept everything from getting really hard. I will keep using it |
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I used it back when I shot quite a bit of USPSA. I haven’t stuck with it - I prefer the more non-toxic options now, even if they aren’t “better”. Superlube and Lubriplate FMO and SFL have not given me issues of burning off prematurely or evaporating… and they don’t give me cancer or stain up my shit. I bought some Ballistol recently as an all purpose oil, jury is still out on that one. I used Slip EWL as it had a good rep, I’d probably use it again if it’s all I had. |
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Originally Posted By Seth_Livzz: I guess I'm in this group, and will be until I die. Originally Posted By Seth_Livzz: Originally Posted By Greg8541: Those who haven't yet tried Lucas Extreme Duty. I guess I'm in this group, and will be until I die. I've not used it on guns, and now I'm going to make sure I never do, all because of OP's cultish, slavish infatuation.  |
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 ETA: Whoops, not GD I have used a bunch of different lubes, everything from motor oil to cherrybalmz but Haven't tried the Lucas products yet  Slip2k products are overpriced like the rest of them but EWL / EWG are at the top of my list if you can get them in bulk/discount Some perform better than others in different firing schedules, suppressed, temperatures, etc |
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Originally Posted By Greg8541: Those who will use Lucas Extreme Duty oil until they die. Those who haven't yet tried Lucas Extreme Duty. I said it Sorry, but I have tried it but no longer use it. Gone back to plain old Royco 634. Lucas is a very good lubricant, I will give it that, but I don't find it sufficiently superior to CLP or LSA to justify its continued use over the more plentiful (to me) Royco 634 or SENT 46000. And, CLP does double as a carbon breaker. |
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Had to drop the trans pan on my 2017 Camaro SS to change out a temp sensor about a year ago. Fluid was only a few thousand miles old but I still replaced the fluid with new. I save about a gallon of the slightly used fluid. I now have enough gun lubricating oil to last several lifetimes. |
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Originally Posted By Greg8541: CLP is the fake McRib from a frozen bag from Walmart, and Lucas Extreme is a gourmet Wagyu burger. Lucas is heat and carbon resistant and if you lube your weapon for storage and come back to it 3 months later it will still be wet. Unlike CLP. Isn't the whole point of dry lube that it's... dry? |
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| I bought a bottle of the Lucas Extreme from O'Reillys. We leave it out on the bench year round. It's been pretty good for our bolt action rimfires. Wife pulled her Bergara out of the safe in the spring and you could see that the bolt was still wet. Zero issues. I'll probably buy more. |
| I still use Lucas now and then. Mostly now I use Bore Tech’s Friction Guard XP. When using Lucas I would shoot a dmr match maybe 250 rounds and bolt/bcg would be almost dry. Using this Boretech in my last 2 matches and it still appears wet in places after a match. |
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