Mancala:
The oil mantra that works for me is "Change it hot and change it often"! 3k miles on todays oil blends may be a bit excessive but it certainly can't hurt (worst case, maybe your oil drain plug gets stripped sooner). 4.5 -5k mile intervals is possible even on dino oil and longer on synthetics. I say this with countless oil analyses on vehicles over my driving experience.... 30+ cars and counting. However, time is another factor you should consider. Even if you haven't done the targeted miles, you should change your oil at least once every 6 months because oil collects moisture when a vehicle is not driven to operating temps frequently. This is another cause of engine sludge. Like they say, drive it like you stole it once in a while (Italian tune up)

Mancala:


Yikes! This looks like a severe case of carbon build up commonly known as coking. Is this a diesel engine? It is basically oil that has oxidized at high temperatures and crustified to the state of coal. Does your engine frequently overheat? Common causes of this in a gasoline engine include poor timing, too much idling, improper air-fuel ratio, worn out or dirty air filters and excessive ring clearance. At 230k (miles or kilometers)…… i'd suspect ring clearance but start with the easier suspects.

Contumely:


Oil can be used even for a year plus. Many studies support this.
This change change is just to put fear in people.

Contumely:


Oil can be used even for a year plus. Many studies support this.
This change change is just to put fear in people.

Contumely:


Oil can be used even for a year plus. Many studies support this.
This change change is just to put fear in people.

EgunMogaji2:
Post Mortem pictures.

Cylinder #1 has both crank bearings spun together.

Oil pickup screen is 3/4 blocked with sludge, a mixture of silver from the bearings and baked oil.

Oil pan has significant residue of what I’ll call “grease” for lack of proper description.

Block will become the base of a center table in my man cave.

Cylinder heads will become door stops.


Is that a timing belt I see in the picture? Interference engine? Hopefully, they put in a brand new belt with the replacement engine.

Piston and rods will become wall art in my man cave.

Crankshaft will become oversized conversation piece in the garage.

Egun “waste not, want not” Mogaji

EgunMogaji2:


Well I guess I can find a way to use the timing belt in the bedroom