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E-Bodies.org Cuda Challenger Forum

Technical Shop => Engine, Transmission & Rear End => Topic started by: mezmerized1970 on September 15, 2023, 06:57:31 AM

Title: 340 6 barrel engine oil
Post by: mezmerized1970 on September 15, 2023, 06:57:31 AM
What's the best oil for my 340/6 in my AAR?
Title: Re: 340 6 barrel engine oil
Post by: Cuda_mark on September 15, 2023, 07:58:42 AM
I use Brad Penn 10-40 in all of my older engines.
Title: Re: 340 6 barrel engine oil
Post by: Brads70 on September 15, 2023, 08:11:53 AM
I also use Brad Penn but thicker for my engine combo 20w-50
Title: Re: 340 6 barrel engine oil
Post by: benguin on September 15, 2023, 08:34:24 AM
With my flat tappet cam, and relatively leisurely/infrequent use, I'm using Valvoline VR1 (branded for "racing and classic cars") synthetic with a bottle of ZDDP supplement- both are hopefully to ensure a high enough zinc level to keep the wear to a minimum.   I had used Mobil 1 successfully for many years, but the declining zinc content in most of their blends didn't inspire a high level of confidence.
  Ben
Title: Re: 340 6 barrel engine oil
Post by: erik70rt on September 15, 2023, 10:39:47 AM
I really like (and use) the Driven HR5 Hot Rod motor oil.  Added ZDDP and great for storage with rust inhibitors.
Title: Re: 340 6 barrel engine oil
Post by: Skdmark on September 15, 2023, 10:47:26 AM
I just switched to Valvoline VR1 synthetic 10w-30 a month ago based on reviews and recommendations.
Brad Penn would be my alternative choice.

Title: Re: 340 6 barrel engine oil
Post by: mezmerized1970 on September 15, 2023, 11:07:18 AM
Brad Penn semi-synthetic?
Title: Re: 340 6 barrel engine oil
Post by: Chryco Psycho on September 19, 2023, 07:26:10 PM
Sure as long as it has the zddp formula for older flat tappet cams
Joe Gibbs is another option
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