Any known oil leak spots on the 603? Should I bother with the oil cooler lines?

Head, exhaust, and intake gaskets. Has a problem blowing out the gasket between the #1 cyl and a timing chain case...

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All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic

Injection Pump

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Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)

what gaskets are there NOT to change if the engine is out?

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The ones that are a pain, like the headgasket. Although I think I'll loosen up the cruise actuator to make IP work easier later on, since it probably doesn't work.

If you're doing head gasket, might as well do valve seals while it's off.... I hear they're a real headache to do while the head is on......
While you're doing that, might as well put all new upgrades seals into the IP, and replace all the plastic hoses on the IP... Might as well put new seals in the turbo as well. It's a lot easier to take it off while the engine is out... (ask me how I know).
Look into timing chain and guide rods as well...

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All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic

if it has the original headgasket, you should really consider replacing it on principle... seriously.

the technology since the 80's is far, far behind that of today's. When you compare the original gasket next to a new gasket, you will understand fully.


With the engine out of the bay, you should take the opportunity to take advantage of the space available. Replace any gasket within reason, the main seals shouldn't even be questioned.

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Front and rear seal can't be done in the hole, I'd suggest those, and the main oil-pan gasket.

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Gone to the dark side

- Jeff

So if i have an oil dribble at # 1 cylender is that a head gasket getting ready to go?

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86 300SDL. 250,xxx on #14 Head. One eye always on temp gauge.. Cruising towards 300K

Maybe not 'ready to go' , but certainly compromised.

If left alone, oil will get into the coolant first (most likely) and oil will begin to foul the combustion in cylinder #1; leaving nasty deposits.

Ignoring a leaky headgasket, even if it never 'fails', could permit damage to the surfaces of the block and head.

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