Inherited my Dad's Lacrosse and it has crap for MPG. The car has only 23k on it! Driven 2-4 times a month, but only for short trips since 2008. Averaging 14.5 MPG combined. Given TopTier (Chevron/Shell/Costco), I did put Techron and Lucas Upper Cylinder Lube/Fuel Injector cleaner, I've got it up to 21 MPG with more frequent and longer trips. Clean air filter, MAF sensor, tire pressure is spot on. What else can be holding it back? Should I give it another of Technron before 3k miles?
There's a couple of "Best engine ever" compliments on the GM 3800 Series III engine, nice. Too bad about the rest of the car.
I told my dad to buy a Lexus. Damn him! 🙂
When you do the coolant drain/fill, make sure to properly burp the air from the system.
It sounds like this vehicle might benefit from the now famous Italian Tune Up to clean the carbon out of the cylinders and exhaust system, an get you some better gas mileage.
Being in SoCal, my efforts have been more like a Venice Tune Up - 120 miles r/t. Yeah, I guess a good 300-400 mile round trip my be due. After I do my brake flush, coolant drain/fill and get the pulling to the side issue dealt with, I think it will be ready for a long drive.
Great! When are you planning your escape from SoCal?
YESTERDAY!!! 😕
Excellent!