Michael, et al,
That was my first thought. I have used Chevron 20W-50 almost from the
start--IIRC, I used Castrol and other brands for
a while but the Chevron was available at Costco until a couple years ago--and I
believe the Chevron had pre-converter
levels of ZDDP, as some (most?) 20W-50s still do. We used a high-quality
assembly lube when we rebuilt the engine. I
would expect the lack of ZDDP to affect all the lobes, but it only appears that
2--#2 and #11--were 'lazy.' Also, my OP
is normal for a BJ8, I've never seen any metal in the drained oil and I've cut
the filters open and inspected the media
a couple times and there was no significant metal detritus (just did a change
and will be opening up the filter today).
I just got a case of VR1--it runs $7/qt, give or take!--and will be using that
from now on.
Bob
On 7/19/2014 7:51 AM, Michael wrote:
> What you are describing Bob is exactly what I encountered with AHX12.
> I believe that it was attributable to the dreaded ZDDP problem.
> I would suggest that you drain the oil and check for metal content.
> In 12 the flakes of cam lobe and lifter were all through the engine. The
> first indication of trouble was very low oil
> pressure caused by the relief valve being jammed by the metal flakes.
> I rebuilt the engine completely and thereafter used Valvoline VR1 non
> synthetic oil, just put 10 bottles in #174, and
> the problem never reoccurred.
> Michael S
> BN1 #174
> ------------------------------------------------------------------------------------------------------------------------
>
>
--
*******************************************************************
Bob Spidell San Jose, CA bspidell@comcast.net
*******************************************************************
_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
|