Bought a 67 Mustang about a year ago with a "newly rebuilt 302". Pulled the stick when I bought it and the oil was clean and normal. Radiator level was fine. Ran it for a while when I got home. Didn't take it on the road because the brakes were a little too spongy for my riskless self but idled it and played with the carb. Parked it in the garage for about 6 months. Needed to work on the garage so I moved it out back. Before I did, I pulled the stick. Oil was the same, no issues. Stayed out in the backyard for a winter. Temps, in their extreme here in the Midwest (TX, OK) are 10 degrees on nights for a week at the bottom of winter. May be a few days straight of not above freezing a few times a winter. Now I go to move it inside. Radiator is low by a little less than two quarts (something I failed to check to begin with when I first moved it because I was just moving it out back). I fill the radiator and the water is slightly green, no oil or contaminants in it. I check the stick (some funky chinese bling cheapo crap with no marks, pictured below) and there's no oil on it. I add oil, about 3 quarts before I see something on the stick. I'm just moving it inside so I wanted to warm it up before I moved it inside. I warm it up. I check the stick again. Oil was barely showing as before, but now its a chocolate milkshake. I turn the engine off and decide to change the oil before I do anything else with it because I don't know where this milkshake crap is coming from suddenly. I go the auto store and get a stock stick so I can see where my levels are. The stock stick doesn't fit, too long. I get oil and and filter. I pull the plug and filter. I pulled SIXTEEN quarts from that thing before it was dry. SIXTEEN. Holy baby Jesus. I put a new filter on it and a new 5 quarts. Nothing showing on the chinese stick. Now this thing is heavily modded, not by me, by the seller's dead son. I think it has a high capacity oil pan on it but it got too dark out back before I could grab measurements. Whole bunch of bolt on stuff. Edelbrock covers, intake, carb, etc etc, and the chinese dipstick to bring milkshakes to the yard. So I say all that to say this. I don't know what's going on with her. 4 gallons of half-milkshake, half normal oil? I've heard of freeze plugs popping out but not outright failing. I just don't know what to think of her. What are your thoughts gurus? Thanks.