The Ford Barn

Bobby O · 04-11-2026, 10:22 PM

Hi, I been using Shell Rotella 15/40 in my 1955 Fairlane.I noticed you can get that oil in a Synthetic Blend. Not fully synthetic. But a blend. Is it OK to use that or not? Thank You.

miker98038 · 04-11-2026, 10:31 PM

O boy, an oil question. Melting the butter for my popcorn now.

Seriously, there’s several synthetic and dinosaur based oils designed for flat tappet engines. That’s probably a better choice than Rotella these days. I ran it myself years ago, and by the 5 gallon cans in the marine diesels. No more.

Bobby O · 04-12-2026, 06:13 AM

What oil are you using now?

BW · 04-12-2026, 07:09 AM

I use Lucas hot rod & classic car

miker98038 · 04-12-2026, 11:37 AM

Sponsored Links (Register now to hide all advertisements)

I’m using Driven HR2. My engine builder/dyno guy likes their line for vintage racing cars. He’s done a lot of them. You can read their marketing info here, and look at the whole line. But I think most main line companies (like Lucas, etc) also have a product.

https://www.drivenracingoil.com/collections/hot-rod

04-11-2026, 10:22 PM	#1
Bobby O Member Join Date: Jun 2018 Posts: 35	oil Hi, I been using Shell Rotella 15/40 in my 1955 Fairlane.I noticed you can get that oil in a Synthetic Blend. Not fully synthetic. But a blend. Is it OK to use that or not? Thank You.

04-11-2026, 10:31 PM	#2
miker98038 Senior Member Join Date: Mar 2013 Location: Kent, WA. Tucson, AZ Posts: 1,765	Re: oil O boy, an oil question. Melting the butter for my popcorn now. Seriously, there’s several synthetic and dinosaur based oils designed for flat tappet engines. That’s probably a better choice than Rotella these days. I ran it myself years ago, and by the 5 gallon cans in the marine diesels. No more.

04-12-2026, 06:13 AM	#3
Bobby O Member Join Date: Jun 2018 Posts: 35	Re: oil What oil are you using now?

04-12-2026, 07:09 AM	#4
BW Senior Member Join Date: Jul 2011 Posts: 322	Re: oil I use Lucas hot rod & classic car

04-12-2026, 11:37 AM	#5
miker98038 Senior Member Join Date: Mar 2013 Location: Kent, WA. Tucson, AZ Posts: 1,765	Re: oil Sponsored Links (Register now to hide all advertisements) I’m using Driven HR2. My engine builder/dyno guy likes their line for vintage racing cars. He’s done a lot of them. You can read their marketing info here, and look at the whole line. But I think most main line companies (like Lucas, etc) also have a product. https://www.drivenracingoil.com/collections/hot-rod