Sorry, I have never heard of the paraffin in the Pennzoil. I bought my S-10 in April, 1996 with 4 miles on it. I only change the oil every 5k miles and have treated the little 2.2 like crap. I have pulled boats, 4-wheelers, and I loaded the bed down so much one day that I hit a bump and blew both rear OEM shocks (canÆt do that nowàtoo many hills). The only thing that I have ever used in it was Pennzoil 5W-30 and a Fram filter. That was until it hit 100K. I have never had a problem, except for the slave cylinder. I have no idea what my 2.2 looks like on the inside, but it has never ticked and the oil always looks good when I change it. That is why I went the same route with the new 2.6 for my Raider, except I went to 10W-40. What is so different about these two engines?