Hi, hope some can tell me an opinion, I have a mustang70 sportroof with 351 engine, it has abot 5000 miles since I rebuilt it, it does not smoke, not leak and saunds an run great but it spend about 1lt. of oil every 200 miles, I have use syntetic an conventional oil but the problem persit. Please give me an opinion
Thanks
best regardes
Florencio

 

A quart every 200 miles is quite a bit. It may get better with time as the cylinders will hopefully break in a little more.

You can try pulling the plugs to see if one or more cylinders might be responsible for the oil loss. Any plugs coated with oil will indicate that this cylinder is at fault.

Also, if you changed valve covers or are otherwise running PCV without a baffle in the valve cover, this can cause excessive oil consumption.

 

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