[DML] Re: Burned engine oil

["Harold McElraft" <hmcelraft@xxxxxxx>]

Interesting information - I have not run across this bulletin 
before. I have read where the B28 resolved many of the B27 issues 
including oil flow to the cams. Interesting that Volvo did this. 
What about the other users? Did they embrace the Volvo 
recommendation? It seems that Volvo decided to move down the shear 
scale to solve a flow issue that could bring up another issue. I 
have also seen that US manufacturers have gone to lower oil 
viscosities (Ford for example) to obtain gas mileage. The bulletins 
are so low-key that you can assume that the bulletin was for 
regulations and not for the general population. Well, one thing for 
sure, it is this type of "I didn't know that" information that keeps 
everyone uncomfortable about just exactly what is correct. Before 
long we may have so much information and read so many fact based 
opinions that we will be completely unable to decide what to use.

Harold McElraft - 3354


--- In dmcnews@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> 
wrote:
> Actually Volvo disagrees with you. In late 1984 they issued a 
service
> bulletin for all B28F, changing earlier 10W40 oil spec to 10W30. 
This
> applied retroactively to earlier PRV's. Heavier oil wasn't flowing
> properly through constricted oil orifices, leading to "Excessive
> Camshaft/Rocker Arm Wear" (title of the bulletin).
> 
> DeLorean owners are well served to study history of our engines 
beyond
> the short time frame in which DMC was buying them.
> 
> Bill Robertson
> #5939





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