Oil Change - Warm Oil

[mark99]

I normally operate the boat engine hardish for a good time (1 hour)  before stopping abd pumping out the oil (2LW) for an oil change to ensure it's "thin" enough to get most out to flow into sump and out.

 

I can't take the boat out at the mo so wondered what the min time would be to run the boat (in gear) would you do to thin out the oil?

 

Opinions welcome. I'm thinking getting the cooling jacket to  35-40c min. 

 

 

Edited August 21, 2020 by mark99

[Alan de Enfield]

3 minutes ago, mark99 said:

I normally operate the boat engine hardish for a good time (1 hour)  before stopping abd pumping out the oil (2LW) for an oil change to ensure it's "thin" enough to get most out to flow into sump and out.

 

I can't take the boat out at the mo so wondered what the min time would be to run the boat (in gear) would you do to thin out the oil?

 

Opinions welcome. I'm thinking getting the cooling jacket to  35-40c min. 

 

 

I've always just done 5 to 10 minutes (in neutral) until the engine is 'warm' and the oil comes out just above body temp (just warm) and, always seem to get out most of it so that when I refill I use almost the full amount in the manual to get to 'full' on the dipstick, run the engine again to fill the filter and circulate the oil then top up as necessary.

[dor]

What sort of mooring are you on?  Running in gear is usually frowned upon.

[Momac]

I also run in neutral long enough to warm the engine prior to extracting the oil.

[BEngo]

If you have a thermostat, get it warm enough that the thermostat opens, at least partially.   If t'watter is 'ot then the oil will at least be coming along.

N

[PhilR]

I changed the oil last week on our SRM2 after a 1.5 hour cruise down the canal. The oil change was  much quicker than when I have done it after half an hour running the engine in neutral on our mooring.

I use a Pela vacuum extractor shoved down the dipstick tube. Surprisingly, there is less than an egg cup of oil left in the sump afterwards. That is drained from the gas tap that I fitted in place of the sump plug!

 

[LadyG]

Last [also first] time I changed my oil I had a lot of wrong spec oil on board so I did a good warm up and two flushings 10 mins each, dirty oil removed, looked grey and speckled, so I think I got engine clean.

Now, after 70 hours it is still clean, and normal viscosity, not sure when I should change it if it still looks like new?. Isuzu  LB33

Edited August 21, 2020 by LadyG

[PhilR]

11 minutes ago, LadyG said:

 

Now, after 70 hours it is still clean, and normal viscosity, not sure when I should change it if it still looks like new?. Isuzu  LB33

You are braver than me if you can judge normal viscosity!

Edited August 21, 2020 by PhilR

[mark99]

1 hour ago, dor said:

What sort of mooring are you on?  Running in gear is usually frowned upon.

Marina with prop 62 foot from bank. Ie bow in first.

Edited August 21, 2020 by mark99

[LadyG]

8 minutes ago, PhilR said:

You are braver than me if you can judge normal viscosity!

 I had quite a few older vehicles over the years, so always pay attention to oil, I even picked up no oil in my m/bike which I entrusted to a specialist garage, specialists!

A hire car short of oil!

A lawn mower overfilled, again 'specialist'

Edited August 21, 2020 by LadyG

[PhilR]

.

Edited August 21, 2020 by PhilR
deleted as I am oiled up

[gbclive]

Hi Mark.

PM sent.