reduce oil consumption?

Question

any ideas to reduce oil consumption on a 2000 ford 5.4 engine (uses a qt. to 800 miles) have changed oil and filter religiously and do not abuse this vehicle AT ALL . Has absolutly no leaks at all and does not smoke at all either just uses oil rediculously...not using cheap oil either top quality. any ideas ? thx

serious answers only this vehicle is driven 600 miles a day

am using a stright weight oil sae 30w

also this vehicle "runs like new"

outer engine is completely dry and very clean and there are definately 100% no visual oil leaks at all period ! if it was leaking oil u would see it , outside of engine is "comparible to a brand new one" no dirt ALL very clean cast block

Answer 1

There are several things you can do to try to curve the oil consumption...First of all...I doubt you have ever changed you PCV valve, after so many miles they will start to let excessive oil pass into the intake and burn...

The Catalytic systems on these new vehicles are so efficient that they will clean the oil smoke from the exhaust, unless it is extremely excessive..

Depending on the miles on your vehicle, you may want to go with a heavier oil...Most of the quick change places replace the oil with a 10w 30..Maybe step it up a bit...But, the more than likely cause are the VALVE SEALS...They are rubber seals that wipe the valve stems of oil...If it wasnt for the seal, the oil would run down the valve stems right into the combustion chamber..Hence excessive oil consumption...

This repair can be done with out removing the cylinder heads..Maybe a little expensive, but not as much as an engine or cylinder head replacement...Do not let a shop convince you into rebuilding the heads...Depending on the miles on your engine, it could cause the problem to be worse...When you service you heads, it seals the valves off tighter which in turn puts more pressure on the Piston Rings...

Just replace the PCV valve first...Probably cost 10 dollars or less at the part store...Then, if that doesnt do it..Try running a heavier oil...And if that doesnt do it, you might check into replacing the valve seals...

Answer 2

using strait 30 in any car or truck with less than 200,000 is just insane. i believe for recommends either 530, or 520. i don't think you have a consumption problem, i thing you have a simple leak. an engine consuming oil at that rate would have a few other issues, like a check engine light due to a low efficiency cat. i have yet to see a ford with more than 15000 miles that drove that much in a day that did not leak. go back to the dealer, they may have a solution, but you may not have a warranty.

Answer 3

If this car is driven 600 miles a day, how many miles are on it? Could be the rings are worn out. Even a well cared for engine will begin to burn oil when the mileage gets high. Over 150,000 miles I would consider this acceptable.

Answer 4

If you're using/losing a quart every 800 miles, it isn't evaporating, it's going someplace. So yes, you do have a leak. Take it to your mechanic and have him find and fix the leak.

Answer 5

well.............your oil must be going somewhere..........try switching from a multigrade oil to a straight weight oil......the chemical catalyst in a multigrade oil will tend to increase oil consumption..........or try using a slightly heavier oil.......say strait 30 weight instead of 5w20.

Answer 6

Buy a bike or walk ?