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[Tommal]

My 73 burns oil with a noticable residue on 4 of 6 cylinders. I live in Wisconsin but only drive about 8 mos. out of the year. I generally use 10W40 but have seen a number of posts in various forums about using 20W50, presumably to slow oil loss. Any thoughts on what's best - short of a rebuild at this time. (Two kids in college makes it tough.)

[none]

So, where in Wisconsin?
The sad part is that changing to different oil or using additives does not repair or replace worn parts.
The good part is that sometimes a higher viscosity can reduce oil consumption. Changing to 20w50 may help, just keep an eye on the pressure gage so it does not run high. I doubt that will be a problem though.
Since you only drive in warmer weather you might use straight weight oil if that does not work. If you do that, I would recommend starting at 30w or 40w and see how it works. Only 50w as a last resort. Just remember that you might lose some protection when the engine is cold because you would not have the benifit of multi weight oil.

[Tommal]

Thanks. I went with 20W50. I know some real engine work is due but we'll try this for now.

I'm in the Milwaukee area.

[none]

You might try this.
http://www.castrol.com/castrol/genericarticle.do?categoryId=82915470&contentId=7032644