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Ford Tractors Discussion Forum
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Re: What oil for old Ford

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Author  [Modern View]

11-09-2013 04:20:37

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I have a 12 volt system and I run 10W30 in mine. I tried 15W40, which was fine down to around -10F, but the tractor wouldn't crank at -20. I've never had any starting problems with 10W30.

Consider that the majority of your engine's wear occurs at start-up, and it makes a lot of sense to run a multi-viscosity oil.

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36 coupe

11-09-2013 06:13:40

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 Re: What oil for old Ford in reply to MarkB_MI, 11-09-2013 04:20:37  
15/40 has a cold pour point like 30 oil.I cant use 15/40 in my Ford pickup.Erratic oil pressure readings and raps on startup made me drain the 15/40.10/ 30 stopped the noise.Owners manual says 15/40 is ok above 32 degrees.195,000 miles and a worn oil pump can make a difference.My wife had a high milage 89 Mercury that did the same thing with 15/40 when the weather turned cold.If you thing 15/40 is good put a sample in a jar into the freezer.Put a sample of 10/30 along side it and come back and tell us what you saw.

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11-10-2013 23:42:16

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 Re: What oil for old Ford in reply to 36 coupe, 11-09-2013 06:13:40  
32 coupe, I d[d'nt know manufacturers,Ford or others, recommended 16/40 for there vehicles! Especially in the colder months you need to get the oil up to the valves and lifters. Most cars and trucks I've seen lately require 5/30 and some high performance cars today actually require 0/20 synthetic! GT65

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36 coupe

11-11-2013 15:50:29

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 Re: What oil for old Ford in reply to GT65, 11-10-2013 23:42:16  
My truck is a 96.I see a lot of recommendations for 15/40.I say beware.

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11-10-2013 23:57:51

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 Re: What oil for old Ford in reply to GT65, 11-10-2013 23:42:16  
Sorry 36 COUPE, 32 was a typo!

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