[6pack] Zinc Additive.

[im sloane]

Glenn,
I'm not a mechanic, but mine said ZDDPlus was a mandatory additive since the
zinc is gone out of Castrol. Your report surely proves this!

Also I understand Brad Penn 20w50 is a good alternative as it has the required
zinc. TRF is selling it.

When I first heard of this, I also found that STP has some zinc, but being a
private formula they won't confirm how much. Better than nothing.

Sloane :)
69-Six


> Hi All
>
> I have torn down 4 TR6 engines in the past 4 months all with wiped out
cams.
> The latest was a performance reground cam with low miles and 2 lobes
> severely worn.
>
> I know this has been a topic/thread in the past but wondered what if any
> Zinc Additives are out there.
>
> For the rebuilds, I used either Brad Penn 30wt break in oil, Valvoline
> Racing oil (20w50) and Rotella ( 15w40 highest in zinc of the diesel oils)
>
> As these engines age their owners are going to start changing their own
> oil, Most have switched back to Castrol 20w50.
> As I understand that formula has changed to the low zinc for emissions.
> I'm running it in my engine as well.
>
> I'm now very concerned and would like to get this under control with an
> additive.
>
> Any Suggestions?
> Thanks in Advance
> Glenn Franco
> Too Many TR's