Engine Knocking Noise problems of the 1999 Toyota Camry

I have a 1999 Toyota Camry. I changed my oil consistently before every 2500 miles or 3 months, however the oil in my engine still "slugged" or "gelled". I visited my local Toyota dealership to have it fixed and they informed me that the problem was common amongst Toyota Camry's and that they could not cover the engine damage for me unless I provided receipts as proof that I changed my oil every 2500 miles or 3 months since the day I purchased the car. I had not been keeping my receipts as my fiance would often change my oil for us. Needless to say, I had to spend over $2,000 replacing my engine only to later find out that the problem was much more common and severe than I had been told and that Toyota does in fact recognize the defect and offers to fix it complimentary. I learned this while I was out car shopping (at a different dealership) since I no longer feel safe on the road in my unsuitable Toyota Camry. My old engine has been replaced but the new one is not working properly. My mechanic told me it's because the defective part that caused the engines to gel up has now been removed from replacement engines. There is now a noticeable banging noise coming from my engine. I am completely disgusted with the way I was treated by my local Toyota dealership. I was sold a car with a known history of defective engines and the car manufacturers refuses to fix it for me. What type of scam is this?.

While at a stop consumer heard a loud knocking noise coming from the engine. Consumer pulled over to check the problem, and saw that the engine malfunctioned. Consumer had the vehicle towed to dealership, but dealership did not resolve the problem.