I used full synth for the first time in anything about a month ago. Put it in my wife's escalade and liked it so much I put it in everything I have including 1946 Chevy 2 ton. It really smoothed the 46 out the most. Much quieter, idles and runs smoother and stronger. Leaks, well it still leaks but cant really tell the diff on that. Starts up at zero degrees just like it did at 70.

Pat


1946 PW Grain truck, 1966 C10 long stepside, 1972 C20 Custom Camper Big Block, 1975 C10 Silverado OE big block.