When I got the car, I spotted an oil leak on the driver's front side. It turns out it's an intake manifold leak or gasket leak; 600.00 to repair.
What I would like to mention is that the Grand Marquis is notorious for head gasket leaks. Either the oil leaks into the coolant or the coolant leaks into the oil.
So when you buy a grand marquis, check the front driver's side for oil leaks unto the manifold (connections for the exhaust at the motor) or the back passenger side for oil leaks there. It won't be a big leak, but persistent. If not repaired, could result in overheating and ongong power troubles, gas consumption will increase. If still not found and fixed, could lead to a blown engine and total failure.
Other than that, regular maintenance would be a good practice. IE: oil changes, fluid topping, transmission oil check, tire rotations and good dripless under-spray the frame to prevent it from rusting. This car should do 3 to 4000000 kl.
I have a 2000 Grand Marquis. I have never had a gasket problem on mine. That is rare problem, I am sorry that happened.
Yes, I agree, we have had a number of 4.6 powertrains and never had that problem. They've been extremely reliable and good engines except for the intake manifold problem on the I believe 1996-2001 4.6 engines, but for a car like that, that's small potatoes.
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