SummerWolf said:well, it doesn't CREATE leaks, it just shows you where they are more evidently
actually its lower viscosity at startup temps compared to dino. at higher temps it just doesnt thin out as much.redefine420 said:i switched to synthetic about 2000 miles ago and no leaks. i've noticed a substantial increase in oil pressure. before the switch the gauge never read over 40. now on start up it jumps to 80 and idles no lower than 50. i knew synthetics had a higher viscosity, but i didnt expect to notice such an increase in oil pressure. i have a 92 s-blazer, 4.3 with 110,000 miles.