GaryalpUSA
Junior Member
After reading many threads about which oil to use and what weight to use in my 16 5.7 hemi. 95k miles,I decided to cast caution to the wind. I use my truck to haul my wife's horse along with my race car in the summer months. Im from PA but head to So. Florida every winter. I had the hemi "tick" which turned out to be the broken exhaust bolts, but the noise and possibility of a bad cam follower scared me. The last oil change in Nov. I used good ol synthetic 10w 30. I may have given up a mile or two on the mileage but my idle oil pressure on an 80degree day, engine and oil at full temp never goes below 45 psi. I was surprised by that. There is a good video of a fellow who does a great job showing very low idle pressure with 5-20 oil. It is his opinion that low idle oil pressure is the main contributor to the cam follower lubrication problem. I tend to agree with that so I went with a much thicker oil, especially here in Florida where we still get those 80 degree and higher temps this time of year. I also have not noticed any difference in the performance, acceleration, power of the 5.7 with this oil. If I was in the northern climes during the winter I would still use a thinner 5 weight oil but probably go with a 5-30.