anderson
Well-Known Member
what is the best engine oil for a 3 cyl 20hp nanni deisel engine 25 years old?.
engine oil
- Thread starter anderson
- Start date
Latestarter1
Well-Known Member
Your base engine is likely a Kubota.
Take a look the Kubota maintainence stuff
http://www.kubota.com/service/LubricantMaintenance.aspx
alan_d
Well-Known Member
Almost certainly supermarket own-brand non-synthetic for diesel engines.
sailorman
Well-Known Member
15>40 Supermarkt any would do the job
Malish
Well-Known Member
Screwfix offer 15-40 oils for diesel & petrol engines if you have one local or are inclined to mail order
sailorman
Well-Known Member
Sans Bateau
Well-Known Member
Sugest the OP does a forum search, there has been more posted on engine oil than on col regs, Bavarias, anchors and mobo rants put together, or take a look at the Vyv Cox website, hes yer man.
vyv_cox
Well-Known Member
I would not like to dispute the recommendation of Kubota but it must be borne in mind that they are recommending for a current engine, probably in a far hotter and continuous working environment than a yacht auxiliary. I would go for the lowest oil spec that they recommend. Not sure what is the correct viscosity for your engine but I would most definitely not use a 5W in any yacht engine. A 15W is the absolute minimum IMHO and maybe a 20W if it is becoming rattly.
Latestarter1
Well-Known Member
Sounds like you are at it again.......
chart5011
Well-Known Member
Am I wasting my money buying Shell Rimula R3 X 15W040. 4 litres cost £28.95 (Last year in Guernsey £9.95). Engine is 20 Year Old 3 cyl. Lister. Would a cheaper oil offer the same protection?
vyv_cox
Well-Known Member
Rimula R3 X is formulated for heavy duty applications, which means trucks, long distances, heavy loads, high temperatures. Not really a description of most yacht auxiliaries. A lesser oil would certainly be adequate for most ageing engines. At least 15W/40 viscosity to protect bearings with some wear. What API grade does your manual specify?
chart5011
Well-Known Member
Thanks for the reply - I'll check the manual at the weekend.
Latestarter1
Well-Known Member
If the Shell Rimula meets what what was laid down in your original spec it is fine and it is listed as a suitable oil for 'Off highway useage' in the Shell specification guide.
Your issue is that you appear to be paying too much, checked the price with a couple of suppliers it is a little exensive and just over £3.30/Liter seems to be the going rate.
Tranona
Well-Known Member
Yes, Vyv tends to give good advice on this subject. The recommended oil for Kubota based Nanni engines is API CD SAE 15W40 (at least that is what the instruction manual says, so probably correct).
Latestarter1
Well-Known Member
It seems like we have severe dose of specification sheet dyslexia on this forum. In simple terms the engine manufacture requires either 20W30 or 10W30 grade to either CF4 or CG 4. Plenty of universal diesel lube out there from agricultural suppliers.
Then we have people wading without even reading spec sheet recommending ASDA or Screwfix 15W40. Last time I went to ASDA could not move in the car park for battered Landovers towing Ivor Williams trailers being loaded with tubs of oil.
Then here we go again Viv Cox wades in with is own interpretation of what he thinks Kubota should be recommending ‘Not sure what is the correct viscosity for your engine but I would most definitely not use a 5W in any yacht engine’ Who even mentioned a 5W grade? Spec sheet dyslexia again, as Kubota is perfectly clear 20-30 or 10-30. Then the assumption that he knows better than the manufacturer regarding the recommended oil grade and the operating temperature envelope.
Seems like we have a lot of sheep incapable of interpreting a manufacturers spec sheet following a self appointed expert with zero experience diesel engine design and operation.
sailorman
Well-Known Member
I mentioned 5 > 30 & it was only to indicate the price of Asda semi synthetic oil
so meby you should read the posts more carefully
Jcorstorphine
Well-Known Member
Castrol Magnatec Diesel 10W-40
I went to Halfords (should have known better) and went by their book of oil and put Castrol Magnatec Diesel 10W-40 in my old Ford 1.6D (ex Fiesta) at £22 per 4 litres (B&Q sell it for 15)
I may be getting a bit paranoid but I am sure my engine went downhill after that as it now smokes a bit. Previous to putting in the Castrol, I had used a Auto Shop own brand for diesels and the engine ran fine.
Anyway plan is to strip down the engine to the crankshaft and carry out a complete rebuild. Question is what do I put in when I have finished taking into account that it will have new bearings and probably new pistons or at least new piston rings etc.
John
I love (hate) my old Ford 1.6D and one day I will have an engine which works.
I went to Halfords (should have known better) and went by their book of oil and put Castrol Magnatec Diesel 10W-40 in my old Ford 1.6D (ex Fiesta) at £22 per 4 litres (B&Q sell it for 15)
I may be getting a bit paranoid but I am sure my engine went downhill after that as it now smokes a bit. Previous to putting in the Castrol, I had used a Auto Shop own brand for diesels and the engine ran fine.
Anyway plan is to strip down the engine to the crankshaft and carry out a complete rebuild. Question is what do I put in when I have finished taking into account that it will have new bearings and probably new pistons or at least new piston rings etc.
John
I love (hate) my old Ford 1.6D and one day I will have an engine which works.
PetiteFleur
Well-Known Member
My 25HP Beta(Kubota) which is 5yrs old recommends a straight mineral oil of 15w/40 viscosity - which is difficult to get hold of nowadays. Castrol used to do one when I first fitted the engine but now only supply it in big drums. I now use a COMMA straight mineral diesel oil, 15w/40 obtainable from my local car factor at a reasonable price.
vyv_cox
Well-Known Member
You have no idea whatsoever of my diesel engine experience. What is very clear is that you have no experience or knowledge of the typical operating regime of most yacht auxiliary engines.
Also that you are so full of yourself that you leap in to have a go at me without bothering to read the thread.
Tranona
Well-Known Member
So, are you trying to tell me that I have just spent my kids' inheritance on a nice new Nanni and they are recommending the wrong oil.
Their manual recommends exactly what I am quoting - had it in front of me while I was typing.
Nothing about 10W30, 20W30 CF4 or CG4.
So, to repeat in case you did not actually read it first time the recommended oil for a Kubota based Nanni is APICD-SAE 15w40 (for temperate climates).
So please don't confuse people by making your own suggestions.