Oil For A Hw2M

[strummerjoe]

Hi,

 

I have a recently rebuilt Lister HW2M in my boat and I am looking to do my first oil change. My manual recommends an engine oil grade of 20/20W. However the oil for sale in Morris Lubricants for that SAE has an API grade of CF. In one of the other posts on appropriate oils for Listers someone spoke of not exceeding an API grade of CC as it can cause problems for the engine.

 

I have found a company that does SAE 20W in a API CD grade:

 

http://www.ebay.co.uk/itm/Classic-Marine-Oil-SAE20-monograde-25-litres-detergent-free-boat-barge-ship-/261911911986?pt=LH_DefaultDomain_3&hash=item3cfb2a9e32

 

So I have a couple of questions I hope you all could answer for me:

 

Can anyone explain the effect of the different API gradings on my engine, why CF is bad for them, and what they would recommend.

 

And secondly, I have seen other Lister engines be recommended SAE 30 which has a API grade of CC, would this be better than the appropriate 20W which I can source with a API grade of CD/CF?

 

Also, does anyone have any experience with the company in the link I have posted.

 

Extremely grateful for any and all help.

 

Best wishes

 

Strummerjoe

 

 

 

[frangar]

Google "Morris Golden Film". It comes in SAE20,30,40 & 50. It's API CC.

 

Used by a lot of us vintage engine types.

 

Edited to add link

 

http://www.morrislubricants.co.uk/golden-film-sae-20-classic-motor-oil.html

 

 

Cheers

 

Gareth

Edited June 18, 2015 by frangar

[strummerjoe]

Hi,

 

Sorry I meant to mention that I did find this but it comes up with a Classic Oil of SAE 20W with an option to buy it in 5l sizes only at a costing of £23.86. Now I can buy the stuff in my link for £70 (for 25l) or SAE 30W at £80.37 for 25l. I do not mind paying for the correct oil but if i can substitute it for an effective alternative for £30 or more cheaper then that is what i would like to do.

 

Cheers

 

strummerjoe

[frangar]

My local stockist of Morris oils is cheaper than dealing direct with Morris by a reasonable amount.

 

I can't comment on using the Pennie oils brand but I'm sure someone else on here has used them but I can't remember who or where they purchased it.

 

Cheers

 

Gareth

[alan_fincher]

Morris Oils can often be bought significantly cheaper if you don't but them direct from Morris.

 

EDIT: Classic Oils of Aylesbury has been one members recommendation, though I have not yet used them personally.

Edited June 18, 2015 by alan_fincher

[strummerjoe]

Hi

 

Thanks, i will try to locate a local Morris supplier and see if I can get the 20W Classic at a better price.

 

Cheers

 

Strummerjoe