Just my opinion but 62,000 miles with frequent oil changes is more likely
the reason for the good conditions you are encountering.
In addition, it is my understanding that main bearings do not wear nearly
as much as big end bearings if everything is correct.
Geo
On Tue, Oct 21, 2014 at 5:53 AM, Brad Kahler <bkahler1@gmail.com> wrote:
> Listers,
>
> I'm in the process of replacing the thrust washers, rod and main bearings
> on the 62,000 mile 72 TR6 that I recently purchased (preventitive
> maintenance). After dropping the pan I've found what appears to be a
> whitish/silverish substance coating most of the inside of the engine
> block. The bottom of the oil pan after draining also seemed to have a
> coating of the same substance. Rubbing the substance with my gloved
> finger doesn't really come away with anything noticeable on the glove.
>
> At first I thought it might be from condensation since the car hasn't been
> started for over 5 years but the more I thought about it I began to think
> it might be some sort of additive. I contacted the seller and sure enough,
> he informed me he had religiously changed oil every 2000 miles and always
> used an additive called Bardahl. You can check it out via the following
> link.
>
> http://www.bardahl.com/en/products/oil-additives/b-1-oil-supplement
>
> I've pulled the rear main bearing cap and the bearing looks brand new and
> the crank journal looks like it has no miles on it. I remember years ago
> my dad religiously used STP oil treatment on all of his vehicles and he
> never had issues with the engines in his vehicles.
>
> I'm somewhat impressed with the looks of the bearings and journal. Anyone
> else ever use Bardahl's additive? I'm not sure if I should continue using
> it or not. I will be regularly changing oil using Brad Penn's 20w50
> semi-synthetic oil.
>
> Thanks!
>
> Brad
>
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