I will be taking a trip to California 3 weeks from today and I just can't decide which Red Line oil to use.It will take 4 days driving each way for 8 days total of solid driving(okay we are going to visit The Grand Canyon and some various relatives on the way).Once we get there we'll be staying for 3 weeks at one place(probably stop and go traffic every day), so my car's going to be in for quite a bit of driving (mostly highway though with some stop and go in between). You probably remember that I was going to use SynLube a while back, haven't done it yet, and I want to run Red Line polyolester oil for a while before I do it. 1995 Lincoln Town Car 137,000 miles: What I have done so far: High Mileage Auto-RX treatments with dino Currently running Red Line 10w30 with 3 oz. AutoRX I am using The Stratapore Fleetguard filter($15) Using SuperPlug drain plug magnet($30) Installed FilterMag filter magnet($60) I have 1,300 miles on the Redline oil right now I will change the current oil after next week's trip to Dallas and following week's trip to Louisiana(should have close to 3,000 miles on my first run of Redline oil when it gets changed before Cali). I live 20 miles south of Austin,Tx and the car never uses oil if that helps. Oh yeah, after spending $250 on the stuff above the car sounds and drives almost like NEW! The Redline oil in there now is still perfectly clean and healthy looking! Thanks for reading so far! Now I just need an opinion on which viscosity Redline for the Cali trip. Thank You for your help!!