lucas oil treatment

**black bart** · 10-26-2009, 03:53 AM

Originally Posted by occupant

I do wonder if Ford back-spec`d the oil on my `76 351M-powered Torino to 5W20. Here`s the spec chart from my `75 owner`s manual (the `76 manual is out in the car)

Outside Temp 32F or below: 5W30
-10F to 90F: 10W30
-10F to above 90F: 10W40
Above 10F only: 20W40
Above 32F only: SAE 30
Above 60F only: SAE 40

Of course I don`t always follow the directions. The car burns as much oil as gas. I add about 2 quarts every tank of fuel. The engine is on its last legs so I`ll throw anything in there. Since my last oil change with 10W40 in the 90-degree heat of May I have topped off with:

3 quarts of AutoZone 10W40 SJ
3 quarts of Valvoline 50W racing oil
2 quarts of SuperTech 20W50 SL
1 quart of Pennzoil 40W SL

I`ve only driven it 1000 miles since that oil change. It doesn`t leak a DROP. It doesn`t smoke either. Go figure. I wonder where all the oil is going?

I don`t think your olé 351 was back-spec ed but 9 quarts in 1000 miles would either have light smoke or it is leaking that is a lot of oil for so little miles.
If someone was to follow you I bet they could see it smoke you may not see it while driving but it would show some smoke at times like when shifting or decelerating.

**occupant** · 10-28-2009, 09:57 AM

Originally Posted by black bart

I don`t think your olé 351 was back-spec ed but 9 quarts in 1000 miles would either have light smoke or it is leaking that is a lot of oil for so little miles.
If someone was to follow you I bet they could see it smoke you may not see it while driving but it would show some smoke at times like when shifting or decelerating.

THAT`S the weird part! My wife, my parents, and two of my friends have followed me and not only saw no smoke, but smelled no oil either?!! It`s the oddest thing. And I have double checked underneath after every trip and there`s just NOTHING?!!

**GearHead_1** · 10-28-2009, 12:46 PM

When cars lose oil, there is only two places it can go. It either leaks or is burned. If you can`t find it on the ground, you`ve got a pretty good idea it`s going out the pipe. This isn`t entirely accurate, you could be putting it into the radiator but you would be experiencing other problems as well.