Powershift

Tetraethyl lead was originally added to gasoline for two reasons:

1. It allowed higher engine compression with then known engine/mechanical technology

2. PROFIT $$$$$$$$$$$$$$$$$$$$$ for the oil companies and for GM (GM developed TEL, and Ethyl Corporation who first manufactured and sold it was a joint venture with GM and Exxon Oil)

The positive effect on reduced valve recession and valve life was an unintended consequence. And this effect was only significant during high load engine conditions. Our classic cars don't qualify.

Larry

SI67

It's something Gladys Knight uses on her Pips.

SDVette

Yes, but once it was added, it allowed the valves and seats to be made of softer (aka cheaper) materials.

wmf62

Larry
but you might as well p into the muddy Miss in hopes of clearing (not cleaning) it up as to try to change madeup minds. it's their $ and if it makes them feel good (Frank's offer aside...), so be it....

Bill

btw, we were in NOLA for a medical conference a couple weeks ago, toured the Destrehan Plantation across from you; Tara it's not, but it ain't Georgia either. Mississippi is a whole different environment and culture

wmf62

….and radio repairs

Bill

wmf62

ain't nothing cheaper than the cast iron the heads were cast from; then or now
Bill

Powershift

I repeat...........our classic cars do not qualify............unless you are running yours in the Pikes Peak Hill Climb or the Daytona 500.

Larry

Powershift

Bill:

You should have called/emailed and come by the house. We could talk MOPARS and Cogen.

Larry

SDVette

With no overdrive, my car runs 3000+ RPM on the highway at 65 MPH. My engine temps, which are fine when idling in traffic, fine when cruising under 55, rise up after about 15 minutes on the highway.
In my mind, this driving is stressing the valve-to-valve seat interface. Without a layer of lubricant, the very high temps and metal-to-metal contact are exactly what cause seat recession.

And yes, it's not uncommon to climb 4000-5000 feet on a drive here in SoCal.

Never take long highway trips? Probably fine. Have overdrive to lower the RPM? Probably helps a lot.

I'm just not taking any chances. No one has commented on the links I posted. These are real car guys tearing down their engines to find valve seat damage.
Not anyone selling products or services. Who has the closed mind?

juanvaldez

Why not just run 100 octane leaded fuel?

SDVette

That would work too. Impossible to get in California. Airports are not allowed to sell it unless you're pumping it into a plane.

juanvaldez

Bullshit. Folks put it into approved containers all the time. Most of the pumps are self serve 24/7 anyway.

SDVette

Not sure where you live.. but the civil aviation airports around me (San Diego) are secure. You can't even drive onto them without a passcode.
My dad was a private pilot. I know the drill.

It's also about $6/gallon.. Cheaper to use a few ounces of Octane Plus per tank.

juanvaldez

I know the drill, too. I fly almost every day. All you have to do to get a key card is to ask and have some sort of half assed reason. It is never a problem getting on an airport. If they use keypads just tell them you are picking someone up. Once you know the code you can't unknow it.

SoCalErv

now that is good!!!!!

dplotkin

Here ya go.
The car potions (additives-supplements-cleaners) are not unlike nutritional supplements and vitamins. There are piles of research to advocate for both, and many people say thy feel better when they take them; and that their automobile runs better when they use them. As such, who gives a damn whether the science behind it is real? If it feels good, do it. None of this crap hurts anything as long as you don't put too much in the wrong hole, just like vitamin C and low gluten yogurt.

Dan

SDVette

Still no mention of the cases I posted in the links (?). How do you explain them?

Interesting analogy, but you're generalizing widely. I don't use it to feel good. I don't use any other 'potion' type car products, and I don't take supplements or vitamins. I use it for a specific reason.. The reason is this: The gas from the pump included TEL when the car was new. The TEL performed a function (valve seat lubrication) that extended engine life. When gas was changed to unleaded, valve seats in new cars were changed (hardened) to accommodate the lack of TEL in the fuel.

It's exactly the same for ZDDP levels in oil. They have been reduced over time, and engine design has changed to accommodate the lack of it.

OK, I think I got this out of my system. I'm off to fill my crankcase with Pennzoil 10w-30 and sign up for Frankie's protection plan. Good night gents!

Tonio

cv67

I use the same thing and am sold on it, usually skeptical of these products. Use a glove on your hands and dont breathe it!!
IMO works better than mixing ca 91 and some VP 100 plus it costs way less.


Yes you can get valve recession...got it on my 67 rs, orig seats. was a daily driver. Didnt tow with it. Would leaded gas make it last forever, no.
Those seats are how many yrs old, if they are getting beat up replace or buy new. Not a big deal for something either way thats seldom driven.

MikeM

Right and if you're a one finger "pecker" you won't know what that is. The P is next to the L.