This is a failed (AUG engine code) 1.8t VW engine that apparently spun a cam bearing (noticed when I removed cams) and siezed the top end and shut down the engine. No apparent timing belt damage or misalignment. From what the previous owner said this is probably the 4th 10k OCI with PYB 5-30, unkown maintenance history previous to that. Had a Mobil 1 filter on it when I drained the oil. Some sludge buildup was evident and the oil pressure warning had been triggered on multiple occasions and there was apparently a sludge fix in its history prior to 120k miles as well.
Code:
Mileage 174k
OCI 10k
Oil PYB 5-30
ALUMINUM 12
CHROMIUM 2
IRON 56
COPPER 15
LEAD 2
TIN 8
MOLY 85
NICKEL 2
MANGANESE 1
SILVER 0
TITANIUM 0
POTASSIUM 4
BORON 39
SILICON 26
SODIUM 14
CALCIUM 2276
MAGNESIUM 15
PHOSPHORUS 816
ZINC 963
BARIUM 1
cSt100 9.52
SUS Visc 57.6
Flash°F: 400
Fuel %:
Coolant%: 0
Water%: 0
Insol%: 0.3
TBN: ?
I find it interesting that Insol% is only 0.3 despite the evidence of sludge buildup, and also note that the air filter was deformed which probably lead to the high silicon.
Also the cam 'bearings' aren't really bearings but aluminum surfaces integral to the head and caps. The failed surface is either from lack of oiling leading to melting of the surface or possibly ingestion of some foriegn metal fragment. There is a bunch of metal galling on both the bearing surface and cam surface so I'm not sure which is more likely.
Code:
Mileage 174k
OCI 10k
Oil PYB 5-30
ALUMINUM 12
CHROMIUM 2
IRON 56
COPPER 15
LEAD 2
TIN 8
MOLY 85
NICKEL 2
MANGANESE 1
SILVER 0
TITANIUM 0
POTASSIUM 4
BORON 39
SILICON 26
SODIUM 14
CALCIUM 2276
MAGNESIUM 15
PHOSPHORUS 816
ZINC 963
BARIUM 1
cSt100 9.52
SUS Visc 57.6
Flash°F: 400
Fuel %:
Coolant%: 0
Water%: 0
Insol%: 0.3
TBN: ?
I find it interesting that Insol% is only 0.3 despite the evidence of sludge buildup, and also note that the air filter was deformed which probably lead to the high silicon.
Also the cam 'bearings' aren't really bearings but aluminum surfaces integral to the head and caps. The failed surface is either from lack of oiling leading to melting of the surface or possibly ingestion of some foriegn metal fragment. There is a bunch of metal galling on both the bearing surface and cam surface so I'm not sure which is more likely.