I have Synthetic in both my Mazda PU and my wifes Saturn....YES, you will hear a little noise from the engine using Synthetic. Every engine I have listened to that was switched from Dyno oil to Synthetic was noisier .
I don't think it's anything to be too concerned about.
I had a friend who used Mobil 1 in his Harley....It rattled so bad it scared him, he dumped it out and put the Harley oil back in...
Just run it, your getting the best lubrication you can get in my opinion.... "BH"
Poison spider Evap.Skid/Master craft grab handles/Or-Fab spare tire-can carrier/ Gibson SS Duals/ Q-tec Floor Liners/Hidden Hitch Receiver, AntennaX 7inch, 48" Hi-Lift.
Viet Nam Veteran 69-70, Troop "D" (AIR) 3/4 Cav. ,25th Inf. Div. CUCHI RVN. UH-1H Crew Chief of the "Pinball Wizard" 68-16224. Call Sign "CENTAUR".