My 03 Dodge Grand Caravan 3.3 V6 daily driver work van. 166 thousand plus miles. 52 thousand when I bought it from a local Ford dealer at wholesale so I know they didn’t tune it up. There was a sticker were they did an oil change & state inspection. Van has always run like a top untill about a month ago. 87 octane gas. All I do is change the oil every 4 thousand miles. Never even changed the air filter. Check out the electrodes. Nearly burnt off.