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5W30 Oil in 8N

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Jim(Ottawa)

05-25-2001 11:23:30




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I'm about to change the oil for the first time in my new (to me) 8N. After reading the archives, I've decided to go ahead with a multigrade detergent oil. The question now is what grade? I'd like to use a 5W30 year 'round for three reasons: 1) the thinner oil at startup gets things lubed faster 2) it gets pretty cold here (-20F) in winter and not that hot (80F) in the summer and 3) I'd like to simplify my life since 5W30 is what I keep on hand for my car and truck. What I don't know is how tight this old engine is and whether the thinner oil will get past the rings and foul the plugs. Has anyone had any experience with light multigrades in old tractors? Thanks in advance.

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Redbelly1

05-26-2001 06:56:09




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 Re: 5W30 Oil in 8N in reply to Jim(Ottawa), 05-25-2001 11:23:30  
Jim,
I agree with what someone else said about the oil pressure. If it's good after your tractor has warmed up, then use the 5W-30.
My 8N, burns a little oil until it warms up, so I use 10W-40 here in South Carolina. I also use Slick-50. It has helped with the 6 volt cranking speed and with temperatures in summer.

Have fun!



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Hendo

05-26-2001 08:14:05




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 Re: Re: 5W30 Oil in 8N in reply to Redbelly1, 05-26-2001 06:56:09  
Jim, years ago i had a 9N that I ran 30W weight in the summer and 20W in the winter but after a complete overhaul I ran 10-30W, year around. I was in western NY where winters could get pretty cold, below zero frequently and I plowed a lot of snow with that old N.
I have a lot of 5/30W on hand and thst is probably what I would use if I still had an N.



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Snowplow

05-25-2001 17:55:33




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 Re: 5W30 Oil in 8N in reply to Jim(Ottawa), 05-25-2001 11:23:30  
I use 5W30 in winter for the reasons you gave, however when I change my oil every spring and put in 10W30. I don't know that it makes life a whole lot of difference but I figure since I'm changing it anyway.... In the fall I change it again and put 5W30 back in.

I change the oil 3 times a year whether it needs it or not. The 2 above mentioned plus one mid winter because with a lot of winter use condensation builds up in the crankcase. Even though this should burn off after a good work out, much of it doesn't in a quick plow job (less than 45 min).

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TimK

05-25-2001 14:10:02




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 Re: 5W30 Oil in 8N in reply to Jim(Ottawa), 05-25-2001 11:23:30  
Jim. I guess the decision maker for me would be how well you maintain oil pressure in the summer using the 5w30. If your oil pressure is maintained, hey, go for it. 5w30 is a modern oil with a heck of lot more additives and protection than the non-detergents were back in Henry's day. My $.02



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Daryl

05-25-2001 12:25:30




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 Re: 5W30 Oil in 8N in reply to Jim(Ottawa), 05-25-2001 11:23:30  
converted mine over to Mobil 1 synthetic. 100% satisfied,check out the spec's on it.better yet do a skillet burn test on it and the your useing now.



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Snowplow

05-25-2001 18:03:48




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 Re: Re: 5W30 Oil in 8N in reply to Daryl, 05-25-2001 12:25:30  
You are correct about the specs but many older engines have so much accumulated dirt, and produce so much carbon, and burn so much oil through worn rings, that the synthetic just isn't cost effective. I change my oil because it's dirty long before it could ever dream of having any thermal breakdown. Many of us may use a quart of oil in a good days work and a quart of synthetic is $$ compare to the plain stuff. You may argue that a damaged engine isn't cost effective either, and I hear you, but with the low heat and rpms of an N it just doesn't make that much difference.

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Don

05-25-2001 11:38:55




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 Re: 5W30 Oil in 8N in reply to Jim(Ottawa), 05-25-2001 11:23:30  
I use 10-30 in my 8N in the winter, but use straight 30W in the summer. I believe the straight 30W gives better protection than a multi grade for older engines. I also use straight 30W in lawnmowers.



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chuck

05-25-2001 11:32:33




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 Re: 5W30 Oil in 8N in reply to Jim(Ottawa), 05-25-2001 11:23:30  
Jim, After a rebuild 9 years ago I was not happy with the high temperature oil pressure that 10W30 provided. I have since run only straight 30 and I am happy with the oil pressure when hot. I bush hogged for four hours last night in 70F temperatures and had 20psi pressure at the 540 PTO speed. chuck 436244



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