lead substitute

Use it in this engine. We used these in our older tiltbeds and tow trucks. THIS particular engine for some reason I have seen receded valves in. to the point of 1/2 to 1 INCH up into the head when I have torn them down for spare parts


I have no idea why but these were the worse for this problem out of many brands I had disassembled.

I always used the lead sub (every other tank) and premium fuel
I used lucas fuel treatment with upper cyl lube. If you buy the bigger jugs it is VERY cheap to use(put a smaller bottle in the car for easier storage) compared to other brands.

 

And we have the other side of this coin.----^^^^^ This is what I've heard and seen. Contrary to the thoughts of rocket scientists lead is needed, or a substitute, to prevent valve damage to many older engines at any speed or RPM.
Why argue or take a chance? It's cheap insurance .

 

So bottom line is buy the lead substitute no harm done. At best it will prevent damage. The auto parts stores around here do not stock enough, and they are always in small bottles. Can you recommend a particular brand. Do they produce this in large containers?

Thanks

 

Check post #16.

 

FYI, Amazon carries Lucas Fuel Treatment in gallon sizes and some are Amazon Prime if you're a member.

 

The fuel treatment will suffice? is a lead substitute.

Thanks

 

I can say I do believe running the lucas also made most of my cars run better too, I know the imperial did and my wagon seems to also. My ford wagon with the 302 didn't really make a difference but mind you it has 122,000 on it too. Lucas has 2-3 different types of the fuel additives. The one I speak of is in a clearer bottle and comes in small quart and gallon sizes. the more you buy the cheaper it is.

It is a fuel treatment and upper cyl lube. If it lubes the upper cyl it will certainly lube valves. Got to be better than nothing.

 

reading the various Lucas product descriptions, I think the gallon ones are just for "cleaning fuel systems". They have one that is upper cylinder lube: http://www.amazon.com/Lucas-10003-C...09364486&sr=1-2&keywords=lucas+fuel+treatment

Then there the lead additive substitute products(not Lucas): http://www.amazon.com/s/ref=nb_sb_s...tive for gas&sprefix=lead+addi,automotive,152

 

Just say that NOT USING leaded fuel or a lead additive will not hurt the valves of an engine.
Then using one of the additives for safety also will not hurt the engine.
So I'd feel safer using the additive in an older engine as insurance just in case all of these nay-sayers are incorrect.
Because if the valves are ruined who's gonna pay to have them replaced with hardened valve seats? And why are newer engines using hardened valve seats if the older seats won't be harmed?
No wonder some people drink!

 

If Jim Hand writes in his Performance Pontiac articles that he does not see it necessary outside of heavy duty applications, I'm going to trust him.

My 1974 Toyota has been running unleaded for decades and the valve seats looked just fine when I pulled the head last summer.

 

Pretty much anything from 71 on was prepped for unleaded fuel.

 

It seems that there are many different opinions on this topic.

My question now is, does Lucas fuel treatment take the place of a lead substitute or shoals I use both?

 

To make the issue as clear as mud, I just went with an old stand by and grabbed some Marvel Mystery Oil to put in with my last fillup.
I did read the descriptions on the Lucas products and didn't really see anything other than it cleans fuel systems.

 

As we stir the mud, years ago I had an old Harley and a few old cars with a slight clicking sound in the engines. During this time period we had a few babies. Well my wife did. I stole a couple of baby bottles and put Marvel Mystery Oil in them. I carried one in each vehicle adding X ounces with each fill up. Those plastic baby bottles are marked and have a flat lid held on by ther nipple ring. I gave the babies their nipples back and they never missed those bottles. In fact I may have given those back later.
Seems like none of the kids squeeked either.