What does Lucas look like?

[Dakotakid]

 NO....not the guy in Ohio. No, I am talking about the Lucas that comes in the can or bottle or whatever.

Specifically: if you open up one of these engines and someone has been running Lucas or STP or "Grandma's Maple syrup in a bottle additive" for any length of time, does this stuff sort of clump and look like the monster from the black lagoon?

Does the stuff tend to refuse to wash off with gasoline? And, does it make the usual diesel clothing stain about 7 times worse than usual? Because, I ran into something which is beyond anything I have seen before.

[theman53]

No, the ME additive usually looks like motor oil only thicker, maybe like honey.

you may have ran into coolant or water. That usually makes the stuff you are talking about. Not always blown HG.

[libbydiesel]

When someone runs one of these engines for a long time on oil that is not rated for diesel engines it creates a sludge to contend with. 

[Dakotakid]

Don't think water or anti-freeze....no.
It is a lot like Lucas said.
That, Libby, is something I did not think about. THAT could VERY well be.

This little 83 Jetta spent a lot of it's life as a tow-behind RV vacation car. Impossible to determine "running" miles. Then, a young lady owned it and, well....what can I say?

Some amazing stuff here: original pistons with NO ridge.....some glaze. Guides have some wear. The car sat for three months and turned over with a twist of the key. Compression stone cold at 380-385-400-405 (stone cold remember). My guage actually runs about 15 or more pounds less than my friends AST brand guage on the comp. tester.

Grant rings....guides.....valves? Head and deck sure look flat with my new straight edge. Have not pulled the pan yet. Anyone for black jello?

Edit: Plus, I suspect this engine might have not seen good hot operating temps most of it's life.....short hops, etc. My young friend is on a budget. Will plastiguage the bearings and such. I've never opened up one of these and seen bores with no ridge.