I am about 500 miles into using a quart of Rislone with 3 1/2 quarts of shell sl rated dino oil. Other night, i left my car idling for warm up for a good 20 minutes, drove, and car shaked mad crazy! Parked it for a while, drove, and then drove ok. I have noticed a burnt smell coming from exhaust... any ideas on whats going on? It smells like burnt metal or something...
car in question, is a 1995 plymouth neon, 99,775 miles. PLanning on running the rislone, for 1,500 max!

car in question, is a 1995 plymouth neon, 99,775 miles. PLanning on running the rislone, for 1,500 max!