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[Shop-talk] Oil analysis - Blackstone

Subject: [Shop-talk] Oil analysis - Blackstone
From: bspidell at comcast.net (Bob Spidell)
Date: Sun, 26 Jun 2011 02:42:46 +0000 (UTC)
re: " Actually my understanding is that oil has gotten worse recently, 
something about removing the additives that protect against friction." 

That would be ZDDP. All but removed from the latest oil formulations--except 
some 20W-50 oils--because it damages catalytic converters, causing cars to run 
smoggier. 

By all accounts, a non-issue unless you're running a pushrod engine with solid, 
'flat' lifters. There are reports of premature cam failures on this type of 
engine, but I haven't heard of any problems with hydraulic lifter or OHC 
engines (which is pretty much all newer engines). 

Bob 

-------------------------------- 
Bob Spidell - San Jose, CA 

----- Original Message -----
From: "BJNoSHOV8" <bjshov8 at tx.rr.com> 
Cc: shop-talk at autox.team.net 
Sent: Saturday, June 25, 2011 7:11:28 PM 
Subject: Re: [Shop-talk] Oil analysis - Blackstone 

You've got it all wrong, I don't do 3k miles anymore. Now I do 4k miles. 




Actually my understanding is that oil has gotten worse recently, 
something about removing the additives that protect against friction. 


> It's 2011. There are better ways to chose your oil change interval 
> than "I thought". Used oil analysis can tell you an awful lot about 
> the actual state of the oil. It's a waste of money and natural 
> resources to change your oil before it's needed, and changing it at3k 
> because that's what you've always done is firmly in the wastefull zone. 
> Again, it's 2011, oil and oil additive packages are way way better 
> than they ever have been. Enjoy living in future. 
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