Tell me I'm worried for no good reason. I changed my oil a few days ago to Rotella synthetic 5w-40. 18,000 miles up to that point on Rotella T 15w-40. I also changed the fuel filter. I've noticed that my oil pressure at idle when the engine is warm is lower than it used to be. On the dino Rotella it would drop to ~40 psi at idle. On the synthetic it drops below 40 to the next small line on the guage, about 35 psi (guesstimate), at idle. Is this a problem or anything I should be worried about. Has anyone else noticed it when changing to synthetic?

Maybe its just wishful thinking, but I think I noticed a difference after changing the fuel filter. Seems a hair quicker on acceleration.