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Old 27-08-2008, 10:47   #1
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Perkins 4-108 50HP Question

Can some one please tell me how much oil and what kind for the Perkins 4108??

Also i have a small oil leak at the base of the dip stick tube, where can i buy a replacement?


John
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Old 27-08-2008, 11:20   #2
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try trans atlantic diesel 800-927-9295
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Old 27-08-2008, 11:46   #3
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Ditto on trans Atlantic. Great folks.

My 108 took 5 Qt with a filter. Showed a bit over on the stick. The angle of the install is also a key factor. If it is angled somewhat you may need to remark the dipstick.
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Old 27-08-2008, 12:35   #4
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Yeah, 5 quarts with the filter is right on my engine.

Been using Shell Rotella over the years and it seems to keep the engine clean and running well.

The last oil analysing report said I had excessive amounts of silicon in the oil...(?)

What parts of the internals are made from silicon?
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Old 27-08-2008, 13:20   #5
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A mono 30 is the recommended oil. But a multi grade is also OK. The lower the number, the more the engine will tend to burn, so don't go too low unless you are working in extremely cold temperatures.

Silicon is sometimes used as an oil and fuel additive as an anti foaming agent. It is a silicon particle that has sharp points and they burst bubbles. Microscopic in size and so they do not cause wear or block filters. However, if you have not changed oil, just top up, then maybe the amount is getting to high. It's a guess as to whether this is in your case though.
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Old 27-08-2008, 14:04   #6
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I've been using the Chevron 15-40 Delo for awhile and I am happy. The 4-107 seams to be happy too.

Don't mean to hijack the thread but, knowing that Perkins leak, sometimes badly. Has anyone had success with any of those magical stop leak fluids they sell next to the oil?

Spank me Mr. Wheels, I am being hopefully foolish right?
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Old 27-08-2008, 14:26   #7
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Quote:
if you have not changed oil, just top up, then maybe the amount is getting to high.
Nah, I change oil religously every 100 hrs, filter as well.

As for the leaky Perkins:

They are a-famous for leaking at the aft bearing and my beast is no exception. I have noticed however that she leaks less if I use the boat more...
In other words if she sits for longer periods, I get more leaks...
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Old 27-08-2008, 14:26   #8
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5 quarts in my 4-108 also. I love those folks at trans atlantic diesel. I bought a complete rebuild from them, and the service has been great.
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Old 29-08-2008, 11:42   #9
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Ok i got the oil changed today, but here is something strange. I took out just over 2 gal. of oil and so far i have only put in 5 qts.

I am thinking this is the wrong dipstick, I looked for a number on the stick but none.

Could someone please measure the dipstick and the tube and tell me how long.

John
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Old 29-08-2008, 14:01   #10
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I love those folks at trans atlantic diesel. I bought a complete rebuild from them, and the service has been great.
Price? Shipping charges? Core/block trade-in? Installation $$ ?

Not that there is anything wrong with my 4-108, just thinking ahead as I plan to keep the old boat with the 29 year old engine. (Overhauled in 1985)

Quote:
Could someone please measure the dipstick and the tube and tell me how long.
Will do as soon as I get home, now in Uruguay...Pretty girls and good food, should be a favorite cruising destination, but don't see many boats around here.
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Old 29-08-2008, 16:34   #11
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I just talk with a mechanic that i know and trust, he told me that he has seen 108's hold as much as 7qt.s so i feel much better. tomorrow i will add the rest of the oil.
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Old 21-05-2012, 06:29   #12
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Re: Perkins 4-108 50HP question

ME TOO, AM RESEARCHING WATER GETTING IN OIL FROM EXHAUST OR HEAD GASKET. WILL POST FINDINGS.

PROTECT YOUR CONSTITUTIONAL RIGHTS, MANY PEOPLE DIED FOR OUR FREEDOM.
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Old 22-05-2012, 00:20   #13
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Re: Perkins 4-108 50HP question

Quote:
Originally Posted by CSY Man View Post
Yeah, 5 quarts with the filter is right on my engine.

Been using Shell Rotella over the years and it seems to keep the engine clean and running well.

The last oil analysing report said I had excessive amounts of silicon in the oil...(?)

What parts of the internals are made from silicon?
water hose, good luck
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Old 22-05-2012, 00:23   #14
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Re: Perkins 4-108 50HP question

Quote:
Originally Posted by CSY Man View Post
Yeah, 5 quarts with the filter is right on my engine.

Been using Shell Rotella over the years and it seems to keep the engine clean and running well.

The last oil analysing report said I had excessive amounts of silicon in the oil...(?)

What parts of the internals are made from silicon?
water hose & silicon gaskets, good lack
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Old 22-05-2012, 01:15   #15
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Re: Perkins 4-108 50HP question

Water in the engin (Will) 99% head gasket, oil in 4-108 I and my friends using Mobil
Delvac 15/40, 5Q every 100 hours, no additives !!!!!!!!!!, replace only oil filter filled up with fresh oil 2-times between oil changes (fram is cheaper then motor work) keeps the oil cleaner and extends engine life. We also adding to fuel tank Dextron
transmission oil (1 Gallon/40 gallons of diesel fuel ) is the detergent, lubricant and is combustible, lubricates and cleans fuel and injector pump, injectors, cleans valve's from carbon buildup, cleans fuel tank from **** and fungus and more, goooood luck
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