Lucas Enigine oil Stop Leak?

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I, regretfully now, agreed to allow the oil change place to add Lucas Engine Oil Stop Leak during my oil change today. I couldn't turn the oil plug so I took it to an oil change place. Should have had my own mechanic do it, but I wanted to get it done on the weekend, ugh. Anyway they had me take a look at the oil pan seal, it was seeping a bit but so what. Oil wasn't dripping on the pavement, no oil spots at home, but I said go ahead and add it. Adding that Lucas gooey [censored] to full synthentic 5W20 was just dumb. I only drove the car home so far about 3 miles. I'm thinking to switch that toxic combo out myself and keep it just for top ups. I will get a pump if I still can't turn that [censored] plug tomorrow. At least I can pump that junk out. Remove the oil filter, drain the filter and put it back on without too much of a mess and add pure 5W30 Mobil 1. The reason I agreed to adding the Lucas Stop Leak was that I have added at least 3 quarts of oil since my last oil change 5 months ago (13,000 km). Car (2001 Elantra) only has 166,000 km. I bet I'm burning oil, I never find oil spots anywhere so I must be burning it. Adding the Lucas Engine Oil Stop Leak was not smart, can make things worse I think.
Further Note: There was an earlier thread about adding a quart every 300 miles. I use to do that on a Plymouth Volare that was leaking badly in the rear main seal. The Elantra is nowhere near that, probably adding nor more that a half-quart every 1000 km on highway, most likely even less than that if I take it easy on the highway and don't speed.

Going to the Canadian Tire now to get a brass pump. Looks like they added an extra 1/3 or 1/2 a quart. I may pump the extra out and just leave it at that. Oh, and I'll get some 0W20 or 0W30 for top ups, so that I can dilute that [censored] as winter gets colder. Yep that's my plan, cross my fingers. We are still over 0 Celcius during the days so I'll keep the [censored] in there and just add 0W20 or 0W30 until the next oil change in the spring.
 
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They call the regular version of this stuff a "bottle of snot"

Hey, maybe if an engine has a spot that isn't sealing as well as it should.. Don't know.
 
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