Originally Posted by Husky Jerk
I drive 40,000+ miles a year and have always used conventional oil, and change it every 3000 to 5000 miles. Own a 03 F-150 with 189,000 and and a 98 Dodge Caravan with 206,000. I do not baby either vehicle. Neither vehicle has an engine problem of any sort. So my question is why spend the extra dough unless you going to try to go well beyond 250,000, which very few people ever do?
Below-zero starts for one thing, Minnesota dude. You will certainly notice the engine cranks over easier, synth oil circulates much faster, gets up to the valve train much faster. Synth just does not thicken up in super-cold weather like dino.
Also, it's been proven absolutely you'll get apx. 2-3% HP increase with synth. That's kind of a big deal.