Brass era transmission oil. Anybody using this?

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oakland12
Posts: 40
Joined: Thu Nov 21, 2013 1:20 am

Brass era transmission oil. Anybody using this?

Post by oakland12 » Fri Feb 23, 2018 10:12 pm

Has anyone been using Chevron MULTIFAK EP 00 in their trans and rear end? It is caramel in color with a viscosity similar to cold honey, and is intended for high-pressure industrial gear lubrication. A friend recommended this product. I had never heard of it. It's a semi-fluid grease. It solves the leaky seal problem and also provides some additional benefits, including a viscosity that tended to slow the transmission gears, thus allowing for a faster double-clutch shifting. I believe this is in my Premier's transmission now. It does shift very easily. I'm wondering if there is any issue with corrosion of yellow metals with this product.
Ken

davewhite
Posts: 12
Joined: Wed Oct 04, 2017 6:11 pm

Re: Brass era transmission oil. Anybody using this?

Post by davewhite » Sat Feb 24, 2018 9:01 am

I have been talking to a Chevron lubricant specialist about the safety of some of their oils with yellow metals. I just e mailed her about Multifak and expect an answer next week. I will post the reply. I did find out that Meropa Oil which is sold by some vendors as safe for yellow metals, is in fact not. It contains sulfur/phosphorus additives and Chevron does not recommend it where yellow metals are present. The only oil they recommend is Cylinder Oil in ISO 680 (SAE 190). Phillips also makes a compounded gear oil in ISO 1000 (SAE 250) that is safe with yellow metals.

Dave

oakland12
Posts: 40
Joined: Thu Nov 21, 2013 1:20 am

Re: Brass era transmission oil. Anybody using this?

Post by oakland12 » Sat Feb 24, 2018 10:14 pm

Thanks Dave. I'll be interested to hear what you find out. I have heard that this product has been used by others in their antiques for the last 10 years with no issue.
Ken

davewhite
Posts: 12
Joined: Wed Oct 04, 2017 6:11 pm

Re: Brass era transmission oil. Anybody using this?

Post by davewhite » Tue Mar 06, 2018 5:16 pm

Ken,
This is the reply I got from Chevron: "Unfortunately, Multifak only has ISO 320 base oil & would not even provide a "band-aid" to the situation. To be honest, I would check with Mobil they have ISO 1000 & up viscosities that would work for your application."

It sounds like Multifak is not an appropriate oil for differential/transmission use. They did not address the yellow metals question. As the product info sheet says it is EP, I would not use it with yellow metals. Chevron also specifically said Meropa Oil is not safe for use with yellow metals, although some old car dealers sell it as safe.

I have used Phillips/76 Compounded Gear Oil in ISO 1000 (8A) and it seems to be the thickest oil available that is safe with brass components. The downside is that currently the smallest size available from Phillips is 55 gallons. If you have a local dealer that is willing to sell you a smaller quantity, that seems to be the best way to go. As mentioned above, Mobil has a similar product. They are available in several viscosities with ISO 1000 (SAE 250) being the thickest.

I hope this helps you. Dave


oakland12
Posts: 40
Joined: Thu Nov 21, 2013 1:20 am

Re: Brass era transmission oil. Anybody using this?

Post by oakland12 » Thu Mar 08, 2018 9:40 pm

thanks for the info Dave
Ken

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