Quandary
Well-known member
I know this is engine oil again but I have just read the 'Which Oil' article by Vyv Cox in Y.M. concise and easily understood advice and clear explanation (though a full page pic. of a filler funnel looked a bit like padding).
However it has left me a little confused regarding what I should use in my nearly new VP D1-30 because of the conflict with the advice in the Volvo owners manual.
For years with a VP 2003 (on advice in PBO about 15 years ago) I used to buy Halfords basic mineral oil (in the red containers) but the spec. for the D1-30 from Volvo is VDS-2 or 3 (Volvos own designations) or API CH4. However Vyv seems to imply that Volvo tends to specify higher performance oil than desirable for their low powered yacht auxiliaries. I had bought Halfords API CF-4 (for non-turbo diesels)for the next change, which I thought was suitably low tech. but he says that while it is now the official replacement for the obsolete API-CD, it may encourage bore polishing. This is exacerbated as keeping the boat in the Crinan canal with locks and speed limits means a lot of low load running and once at sea, I like to cruise at only 2000 revs. because it gives about 6.5 kts.at 2 litres/hr. though every now and again I do give her a blast at over 3,000 for an hour or so, (but consumption is then about 7 litres/hr.) The engine has now done about 200 hrs. on two changes of Volvo own brand oil which I understand is synthetic. I tend to keep boats for a long time and this is likely to be the last one so I want to avoid the need to hone the bores, ever!!!
The D1-30 seems to be significantly more powerful than the 2003 but does this mean that it is a higher performance engine requiring a higher spec. oil.(anyone know what this engine is based on)
I am reluctant to accept the Volvo recommendation that a fully or semi. synthetic oil is best for this engine as I suspect that they may base the one oil spec. on their high performance diesels.
Any recommendations for a solution which is good quality, available, and will not mean honing the bores in 5 yrs.
However it has left me a little confused regarding what I should use in my nearly new VP D1-30 because of the conflict with the advice in the Volvo owners manual.
For years with a VP 2003 (on advice in PBO about 15 years ago) I used to buy Halfords basic mineral oil (in the red containers) but the spec. for the D1-30 from Volvo is VDS-2 or 3 (Volvos own designations) or API CH4. However Vyv seems to imply that Volvo tends to specify higher performance oil than desirable for their low powered yacht auxiliaries. I had bought Halfords API CF-4 (for non-turbo diesels)for the next change, which I thought was suitably low tech. but he says that while it is now the official replacement for the obsolete API-CD, it may encourage bore polishing. This is exacerbated as keeping the boat in the Crinan canal with locks and speed limits means a lot of low load running and once at sea, I like to cruise at only 2000 revs. because it gives about 6.5 kts.at 2 litres/hr. though every now and again I do give her a blast at over 3,000 for an hour or so, (but consumption is then about 7 litres/hr.) The engine has now done about 200 hrs. on two changes of Volvo own brand oil which I understand is synthetic. I tend to keep boats for a long time and this is likely to be the last one so I want to avoid the need to hone the bores, ever!!!
The D1-30 seems to be significantly more powerful than the 2003 but does this mean that it is a higher performance engine requiring a higher spec. oil.(anyone know what this engine is based on)
I am reluctant to accept the Volvo recommendation that a fully or semi. synthetic oil is best for this engine as I suspect that they may base the one oil spec. on their high performance diesels.
Any recommendations for a solution which is good quality, available, and will not mean honing the bores in 5 yrs.