EdWingfield
Well-Known Member
I return to the boat on monday and will drain the coolant from the engine block for frost protection. The plug has a square.
Q. What size is this?
Thanks guys.
Q. What size is this?
Thanks guys.
Volvo 2030
- Thread starter EdWingfield
- Start date
Stork_III
Well-Known Member
Small adjustable spanner. 
VicS
Well-Known Member
Can't help with the plug size but your engine coolant should be an antifreeze mixture. This should protect against freezing and the inhibitors it contains will protect the engine cooling sytem from corrosion.
The coolant should be renewed at the interval specified in the owners manual.... annually I guess.
Also drain and flush the seawater system as specified in the manual.
Manual available at http://www.volvopenta.com/volvopent...lication_search/Pages/publication_search.aspx .if you have mislaid your copy
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jerrytug
N/A
^ what he said, the antifreeze stops it rusting inside. Jerry MD2010
Cantata
Well-Known Member
Should be a 50:50 mix of blue antifreeze and fresh water, replaced every 2 years, and left in all year round.
Laundryman
Well-Known Member
Oops! I've just put green in mine following replacement of the water pump. It had green in already before I drained it.
Do I need to change it please? Thanks. Alan
Do I need to change it please? Thanks. Alan
pvb
Well-Known Member
No.
slipknot
Well-Known Member
I replaced the antifreeze on my 2030 last year which involved removing the hex plug. I replaced it with a tap & collar which is available from volvo and not too expensive. It'll make things much easier when I come to do it again in a couple of years. Apparently it was standard on the earlier models.
VicS
Well-Known Member
Colour is not an absolute guide to the type ( Green might be the same type as blue anyway)
Two basic types:
The modern long life, advanced or OAT (organic acid technology) type used in most vehicle engines since the mid 1990s and also, IIRC, spec'd for modern Yanmar engines ( these are usually the red or orange ones)
The conventional low silicate type ( sometimes referred to as inorganic acid technology) used in older engines. These are usually blue but i thought also green
The conventional low silicate type ( sometimes referred to as inorganic acid technology) used in older engines. These are usually blue but i thought also green
These two should not be mixed although a universal top up mix is available
( there are also hybrid types and formulations specific to various vehicle manufacturers)
Check the actual type you have used rather than the colour.
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Plevier
Well-Known Member
The plug on my 2020 is a standard nasty cast iron plumbing plug, 1/4" BSP I think. The square bit, being cast, tends to be tapered not nicely square and normal spanners, fixed or adjustable, will round it.
Eventually I found the perfect thing was an extension shaft from a 3/8" square drive socket set. The female end pushed hard on to the plug did the business. At the other end I used an adjustable onto the properly machined square end of the extension shaft.
Eventually I found the perfect thing was an extension shaft from a 3/8" square drive socket set. The female end pushed hard on to the plug did the business. At the other end I used an adjustable onto the properly machined square end of the extension shaft.
PabloPicasso
Well-Known Member
Tex
Well-Known Member
Does anyone know the part number for this tap?
VicS
Well-Known Member
See the parts list: http://www.marinepartseurope.com/en/volvo-penta-explodedview-7746800-21-141.aspx
.
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EdWingfield
Well-Known Member
Thanks boys, the 3/8 sq drive socket extension will be taken.
cmedsailor
Well-Known Member
Just one more tip.
If the space below the square plug is not enough to place a backet for collecting the antifreezer, using an oil pump (you know the staff to use when changing oil) you can absorb through the exchange heater top plug around 2-2.5 litres of antifreezer. Then you need to collect the rest from the bilge below the engine (you can use the oil pump again!!).
First time I did this job was messy. Second time using the oil pump was a piece of cake.
If the space below the square plug is not enough to place a backet for collecting the antifreezer, using an oil pump (you know the staff to use when changing oil) you can absorb through the exchange heater top plug around 2-2.5 litres of antifreezer. Then you need to collect the rest from the bilge below the engine (you can use the oil pump again!!).
First time I did this job was messy. Second time using the oil pump was a piece of cake.
parbuckle
Well-Known Member
198736120 Cock Perkins Part No
Viking
Well-Known Member
Q - I have 2 similar hex plug almost next to each other which is the oil and coolant? Ask at the 'Penta' shop they had no idea!
