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01-19-2017, 06:13 AM | #1 |
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600w transmission oil
Hello all,
Just an update for anyone having trouble buying 600w transmission oil/rear axle oil. I have contacted Castrol Classic oil department and they gave me some very interesting information. With various changes in labels, spec etc, 600w is now sold by Castrol as D140. So this might help anyone outside the US when buying transmission oils for your Model A or Model T. |
01-19-2017, 06:46 AM | #2 |
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Re: 600w transmission oil
Castrol D140, that's what I use.
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01-19-2017, 07:46 AM | #3 |
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Re: 600w transmission oil
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01-19-2017, 07:50 AM | #4 |
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Re: 600w transmission oil
You need to see if it is like mobile 680 xp oil. I do not have the info with me, but there are certain characteristics you need in the oil.
Also you are across the pond and the labeling may be different. |
01-19-2017, 11:04 AM | #5 |
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Re: 600w transmission oil
Castrol D140 is better then any 600w oil from the 1920-30 's.
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01-19-2017, 05:56 PM | #6 |
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Re: 600w transmission oil
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Gear oil for modern gears is not the correct type oil for the straight cut gears used in the A. Here is what others have researched so you can have the correct type modern oil for the A. Re: Mobile 636 gear oil [Follow Ups] [Post Followup] [Fordbarn Model A Discussion Forum] Posted by Marco Tahtaras from c-24-4-43-195.hsd1.ca.comcast.net (24.4.43.195) on Saturday, August 09, 2008 at 9:38AM : In Reply to: Mobile 636 gear oil posted by Bob from ? (64.237.121.113) on Friday, August 08, 2008 at 10:35PM : Mobil: Mobilgear 636 (Which has been replaced with MOBILGEAR 600xp 680 11/27/2011) BP: Energol GR-XP 680 Castrol: Castrol Alpha LS680 Shell: Omala 680 Texaco: Meropa 680 Here is some more info Re: 600W Thickness -- One (1) Answer Read Follow Ups Post Follow Up Model-A Ford Message Board FAQ Posted by H. L. Chauvin on Nov. 26, 2011 at 16:34:03 In Reply to: Re: 600W Thickness, Transmission Gear Grinding posted by louis on Nov. 25, 2011 at 17:19:35 Hi Louis, Your former question made sense when someone new to this Forum reads "all" of the many "different" former 600W discussions in the attached archives. It appears most "salespersons", (parts suppliers & oil compaies), offer the 1930's 600W substitute, but as Marco noted in the archives in the late 1990's, they are "not" all the same. Many articles appear on experiences of switching to thicker transmission oil; thus eliminating driver's not experiencing grinding of transmission gears. Gear oil thickness, (resistance to flow), is measured by several methods. Kinematic Viscosity per ASTM D445 is one standard method indicating the milimeters squared divided by time in seconds at 40 degrees C, or 104 degrees F, which is closest to trasmission gear oil viscosity after attaining operating temperature. For example, per ASTM 445, water has low viscosity, honey has high viscosity. The recommended BP Energol 680, Shell Omala 680, Mobile Extra Helca Super Cylider Oil 680, have ASTM 445 measured viscosities, (40 C), of a high 680; Texaco Mepora 680 indicates a thinner 646; however, Valvoline 85/140W drops down to 395, & Castrol 85/140W is thiner at 369. One of the "most" scientific test conducted on Ford's 1930 recommended 600W appears to be a gentleman who wrote that he had an old sealed can of Ford's recommended 600W. After trying many gear oil substitutes, his highly scientific lab test indicated that the 600W was extremely thick, almost like melted tar, & equal to the above mentioned 680 viscosities. His test, he dipped his finger in each & watched it flow! It appears if one uses recommended gear oil with a viscosity of 680, & gears continue to grind, begin looking somewhere else. Hope this helps 1930's future 600W research. |
01-19-2017, 08:06 PM | #7 |
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Re: 600w transmission oil
Penrite Transoil 250. I have used it for years. It's made for our gearboxes. It also comes in 140 and 90 grade but I stick to 250.
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01-20-2017, 01:28 AM | #8 | |
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Re: 600w transmission oil
Quote:
D140 Castrol is perfect - no problems at all |
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