Betty-White
Newbie
Hope you all doing great and your projects are coming along smoothly I just had to post this cuz I'm happy and surprised at the same time. 89 c3500 big block have that dreaded oil cooler leak that I've been putting off for a long time finally did the bypass today, and I was amazed my oil pressure was always around 20-25 psi since I bought the truck about a year or so ago. I didn't think much of it, it is 40 years old so I wouldn't expect not to have new engine oil pressure. after I did the bypass though my oil pressure jumped up to 45 I was quite shocked at this much of an increase obviously the oil cooler must have been fairly restrictive. Anyways just wanted to share in case anyone else has an oil cooler that they've been debating on bypassing you might get really better oil pressure.