(quoted from post at 16:38:12 02/10/21)
(quoted from post at 17:02:05 02/10/21) last question, i have the Perkins AG3.152 3 cylinder gasoline motor, question is, how much of what weight motor oil do you recommend, i am replacing the old oil filter with the one that excepts the replaceable cans, and will be replacing the oil pan gasket, drain plug and plug gasket, and oil.
To be clear, I think you mean you are replacing the stock oil filter, that has a replaceable element in a reusable housing (can), with a spin-on filter adapter kit so you can use a spin-on filter, similar to a filter most car use?
You don't say where you are located. I use 15W/40 diesel oil year round. The 135 with the AG3.152 holds 6 quarts without filter change and 6.5 quarts with filter change. I would put 5 quarts in and check the dipstick, then fill to the full mark, run it a few minutes, shut it down, let it set a few minutes, and check it again. Changing the filter set up may change the quantity it takes. So have at least 7 quarts available when you start.
You really need to get yourself a 150 Operator's manual and a 150 service manual. Get Massey Ferguson manuals first, not I&T ones because you can get one cheaper. I&T ones fill in some things, but not best as primary manuals. JMHO