Drain oil from Perkins 4107

[steveinnice]

Advice wanted from the wise heads here. Should I drain the oil on my Perkins 4107 now, after it has stood for about 6 weeks, or run it up to temp first. My thinking is that it has settled and I'll get more out. I can leave it to drain for a week if I want. Discuss.

 

[coopec]

Is this any help?
Is it Best to change motor oil hot or cold? The answer may surprise you.

 

[steveinnice]

Is this any help?
Is it Best to change motor oil hot or cold? The answer may surprise you.

thanks for that although my motor is over 50 years old and not a modern one like quoted in the article. In the absence of other information I think I'll do the hot drain but leave it overnight to drain. For the cost I might even run for an hour and flush it with a fill of new oil and drain that as well.

 

[coopec]

thanks for that although my motor is over 50 years old and not a modern one like quoted in the article. In the absence of other information I think I'll do the hot drain but leave it overnight to drain. For the cost I might even run for an hour and flush it with a fill of new oil and drain that as well.

I think it is more to do with the property of the oils than design of the motor?

 

[steveinnice]

I think it is more to do with the property of the oils than design of the motor?

Just the article was referring to modern motors having little crevices that the oil sat in unlike older motors. It only did 20 hours last season so not a major problem. Thanks for your input.

 

[PlankWalker]

I used to have an oil drip from the sump plug of my 4108, finally got it oil tight, now i don't touch it.
I now always drain hot using a Pela oil sucky thing.

 

[Moodysailor]

IMO, always drain warm. It makes the oil much easier to remove, and running just beforehand traps and small particles in the oil rather than them settling out and sticking in the sump.

Edit to add - I also only ever use a vacuum pump (Pela) too. I never mess with a sump plug anymore, car or boat.

 

[coopec]

I used to have an oil drip from the sump plug of my 4108, finally got it oil tight, now i don't touch it.
I now always drain hot using a Pela oil sucky thing.

I had no idea what you meant so I googled "Pela oil sucky thing"
Is this what you mean? Does it suck out of the sump plug or up through the dipstick hole?

PELA 6000 Oil Extractor Vacuum Pump 6 Litre Boat Marine | eBay

 

[ChromeDome]

As per the 1973 Perkins Marine Engine Handbook page 43:

 

[Moodysailor]

I had no idea what you meant so I googled "Pela oil sucky thing"
Is this what you mean? Does it suck out of the sump plug or up through the dipstick hole?

PELA 6000 Oil Extractor Vacuum Pump 6 Litre Boat Marine | eBay

Yes, that's the brand. The 6500 is a much better one IMO, but is a bit more money. I did have the 6000 for years though, so they do last.

Pela 6500

 

[NormanS]

As per the 1973 Perkins Marine Engine Handbook page 43:


View attachment 128037

I generally do an oil change about one hours running before lay up. To my mind it's better to have circulated fresh clean oil throughout the engine, rather than just having it in the sump.

 

[Momac]

Oil is cheaper than metal.
I don't worry too much about exact dates but I do believe in annual oil changes regardless of hours run in cars as well as the boat.

As for engine oil change on the boat I extract on a warm engine then leave it overnight . Always there is some more oil to pump out the ext day even if it is a bit slow.