All motor oil additives do exactly the same thing - lighten your wallet.
There is no free lunch and there are no cures in a can. See BobIsTheOilGuy. Performing regularly scheduled maintenance with quality manufacturer-recommended products will see to it that you get all your truck can give you.
You'll hear and read where people say things like, "I've used it for 2 years and have had no problems," which
really means, "My engine didn't explode, therefore ergo it works, and not only that, it works great!" which is an extreme example of an illusory corollary as it proves nothing.
Motokote will flat void a warranty, tho. Have an engine problem and when the oil is tested, if it contains an unapproved additive, there ya go. Lots of examples of that to be found on the net.
Motorkote contains chlorinated napthalene, which is basically Chlorox and mothballs. It's a waxy insulator, but is corrosive.
Duralube, Slick50 and others are all the same thing. Here's an interesting read:
Car maintenance bibles: Oil Additives
It has a link to the FTC search page so you can see other brands and judge for yourself.
I'm impressed. Normally, in my job, I am having to explain this to people.
Motorkote claims to not have any chlorine, but that could also be lawyer speak for not having liquid chlorine poured into it.
Virgin oil analysis, as shown on bob is the oil guy forums, have shown levels of up to 28% chlorine in motorkote.
Here is a good article from amsoil on what long chain chlorinated paraffin oil's do, once heated up and exposed to moisture.
Similarly,
here is a good article, also by amsoil, on why the timken machine motorkote uses is not a feasible test approved by the ATSM (which motorkote claims it is).
Motorkote depends on the TBN of a quality motor oil (total base number) to neutralize the acid or oxidation it creates. You can, and likely will, notice some improvement in fuel economy, but its value is lost in the $100 a gallon of motrkote and the corrosion of your motor.
ALso, it is NOT suited for high temp use. Another reason why the timken machine is a joke.
Take a blow torch and heat up the bearing, then see how motorkote responds.
You can pour clorox bleach on that bearing and get a similar show to motorkote.
As was also stated about Lucas, its a group 1 bright stock. Its filler basically.
You have 5 groups of oil. Group 3 is your typical conventional, although some synthetics are made from group 3 using hydrocracking.
Group 4 is your "true" synthetic, also called PAO's, or Polyalphaolefin
Wiki link
With lucas you are essentially putting in a gear oil, into your motor, that is made up of parrifinic oils that are low shear stable and little to no true additives.
Virgin oil analysis of lucas can also be found on bob is the oil guy forums, or done your self for $20 or so.
IF you want, or need to thicken up your oil, then add a % of SAE 50-60 to an old motor. All that is being done is putting a bandaid on a true mechanical problem.
Plus raising the viscosity of a 15w-40 to fix a problem with worn rings, bearings or oil leaks, only make the problem worse over time.
I have spoken to many drivers who have gone from 2 gallons of lucas, to 4 gallons per oil change because , like a crack addict, they need that FIX.
IT is impossible to STABILIZE someones oil, with someone elses additive, unless that OIL is a group 5 (search for lubrizol, whom makes all the true oil add packs for most oil companies) that is added at the time of blending.
Lucas will always separate from a motor oil given time.
Lucas, and others, can not truly BLEND and mix with a motor oil, there for it can not stabilize or improve it.
Plus, and this is my fav, if it's good for transmissions, and gear boxes, do you really want it in your motor?
As someone stated, if it worked, Mobil or shell would of bought it.
Shell used to own STP and another additive. They have since gotten rid of them.
Sorry for the long rant, and the repeat of info that was said.
Just figured I would add in some articles for those interested.
I do marketing for Shell rotella, on the Rotella road show, so I talk about this exact subject daily.
If for some reason any has questions about coolants or motor oils, regardless of the manufacturer (im no in sales) feel free to pm!
Either way Im impressed with the responses I saw in here!
