Cheap alternative to pricey flat tappet oil in street cars...

Not too bad, for what it does.

I think the cost of the Lucas break in is $4 per change, or so, a little more if you've got more than 5qts. I'd be interested to see what the lab numbers are of that stuff.

After doing the math, if you buy the 8oz bottle that treats 32 quarts, you would get 6 changes out of the bottle, at 28.00 per bottle, so it is only a touch more expensive per change. $5.60 per change, vs $4.00 per change, goes a change further, so you spend less in shipping by one change per year, which I haven't factored in.

But another thing to consider is if you can get it from summit, depending on how much you buy from Summit each year, you may get it shipped for free included in your order, if it's over $100.

It also looks like cam shield comes in 64oz for $170, which treats 256 quarts, or just over 51 changes. That works out to $3.32 per change and beats Lucas, but 51 changes on a classic car that gets maybe 3-4 changes per year if you drive it alot, works out to about 13 years worth of oil changes on one car. I think that stuff might go bad in 13 years. lol Not a bad idea if you've got a fleet of old cars with a few race cars that use more.

I think we should use this thread as a resource pool for people looking for alternatives to expensive oils to run with flat tappet cams.