Did a 25,000 mile service on the Grand Marquis today, and decided to try out Liqui-Moly Getriebeoil in my rear differential. I was going to try out their GearProtect, but since I knew what was in Getriebeoil (MOS2), I decided I'd try this one first. I don't have an LSD, so it's safe for my application.
I know my car's character inside out so to speak, so I notice any differences almost immediately. I know how it drives following a 25,000 mile service (ATF, P/S fluid, brake fluid, differential oil, coolant) and the car actually felt even smoother and 'lighter' this time. Acceleration, especially on the highway, is stronger.
Only downside is I realised I now have to "re-learn" throttle input, if that makes any sense. With a conventional rear end, these cars have a reputation here as being rather 'wild'. I've got Pirelli P6 Four Seasons on this car, which are pretty good on dry pavement. But as soon as there are fine sprinkles of sand or some water around, they lose traction like there's no tomorrow. They've got a fair amount of tread on them, and I didn't plan on replacing them until the end of the year...but I may have to reconsider. Reason I say this is, following the service, I was taking a u-turn. When I reckoned it was safe to pull out, I depressed the accelerator half way (as always) and the right rear spun to the extent where the rear end broke loose. I had to counter steer and floor it all the way, so I don't end up facing on coming traffic, and even then there was not much traction. That was when I started driving it as if it's my first time behind the wheel of this car. Maybe the fact that I used a full synthetic (75W-140) this time has something to do with it as well. Used to use 80W-90 mineral.
Cannot comment on factors such as fuel economy just yet, but the additive is definitely an 'improvement', and I will definitely need better tires before this car is safe to drive again! Considering a set of General Altimax HP's (98V) this time.
I know my car's character inside out so to speak, so I notice any differences almost immediately. I know how it drives following a 25,000 mile service (ATF, P/S fluid, brake fluid, differential oil, coolant) and the car actually felt even smoother and 'lighter' this time. Acceleration, especially on the highway, is stronger.
Only downside is I realised I now have to "re-learn" throttle input, if that makes any sense. With a conventional rear end, these cars have a reputation here as being rather 'wild'. I've got Pirelli P6 Four Seasons on this car, which are pretty good on dry pavement. But as soon as there are fine sprinkles of sand or some water around, they lose traction like there's no tomorrow. They've got a fair amount of tread on them, and I didn't plan on replacing them until the end of the year...but I may have to reconsider. Reason I say this is, following the service, I was taking a u-turn. When I reckoned it was safe to pull out, I depressed the accelerator half way (as always) and the right rear spun to the extent where the rear end broke loose. I had to counter steer and floor it all the way, so I don't end up facing on coming traffic, and even then there was not much traction. That was when I started driving it as if it's my first time behind the wheel of this car. Maybe the fact that I used a full synthetic (75W-140) this time has something to do with it as well. Used to use 80W-90 mineral.
Cannot comment on factors such as fuel economy just yet, but the additive is definitely an 'improvement', and I will definitely need better tires before this car is safe to drive again! Considering a set of General Altimax HP's (98V) this time.
