Lead in oil

[Michael McLaughlin]

Thanks for the response. I believe the engine block is indeed iron.  
I've been running Mobil 1 5W-40 for the most part, and will look at  
chaging the weight. The first oil change I went 10K on synthetic, then  
bumped it up to 12.5K at the suggestion of Blackstone.

The engine uses a bit of oil -- takes a quart or so every 1,500 miles  
or so -- so I figure I'm adding so much oil that going with long oil- 
change intervals isn't so bad.  :-)

-Mike

On Sep 5, 2010, at 1:38 PM, NIck Miller wrote:

> Nothing that I can think of... The block in your car is aluminum or  
> Iron, do you know?  I don't but I assume its iron.  Not sure.
>
> If it is in regard to bearing wear, do you run the proper weight oil  
> for the engine?  perhaps go to a 20w40 and see if the number  
> changes, this will offer better protection for the engine/bearings  
> because of its increased viscosity, but will hamper the engine ever  
> so slightly for the same reason, and it would technically lower the  
> power output by a few, at most 2-3hp, in any test I've ever seen.   
> So little so that its negligible and within the error range in some  
> tests on some dynos...
>
> Anyway, I assume you're intervals for oil changes are around 8-10k  
> if you are using analysis, not much I can think of other than do you  
> use Cheap 87 octane gas, and maybe bump up the viscosity of the oil  
> you use if you think the bearings are wearing too rapidly.