15w-40 oil

[Anonymous-0]

Would it be OK to use 15W-40 in an 8N sidemount? Motor is strong with only 100 hrs on a complete rebuild. Here in PA summer can be real hot and winter real cold and the tractor is used in both. Currently use SAE 30.

 

[Anonymous-0]

I would think it would be better than the 30 weight year round. It comes down to being all about the oil pressure. 15w40 will hold a more steady oil pressure when hot, and flow easier when cold compared to 30w.

 

[souNdguy]

my 850's running it right now.

go for it.

soundguy

 

[Anonymous-0]

OK sounds good. I came across a good deal on Rotella 15w-40. Thanks.

 

[DeltaRed]

thats what my 8n has in it.....and my M.....and my 1256..........

 

[G6 at Snook, TX]

Go for it. A local respected mechanic remarked that Rotella T was so good that it was too bad we couldn't drink it. A bit over the top, but point made.

FYI, I think JD 15-40 is made by Shell and is probably Rotella T. At least that is what the local Deere parts manager told me when I asked who made their motor oil.

 

[lha]

I have been using 15-w40 for a few years,did use 20-w50 and read in an article at the API website that was backed up by research&shown on clear to understand even for Me.Turns out 20-w50 is fine in warm to hot conditions,but not so good in cold ones,15-w40 was much better for all year use.---lha

 

[rbuckel]

I use NAPA (Valvoline) 15w-40 in my 2n with later model side mount. It holds over 30 lbs of oil pressure.