Re: IML: Anybody have a '64-'66 Owners manual?

[Christopher H <imperial67@xxxxxxxxxxxxx>]

It's nothing personal! :)

I live in a warm climate, and find the car runs noticeably hotter (coolant
temperature, I don't have an oil temp gauge in my Imperial) with 10w30. The
one car I did have such a gauge in was a small 4-cylinder, and it usually
ran at about 120C with 10w30, a perfect 105C with 10w40. It's only on older
cars that I prefer the protection of the 20w50. I can't say it's been
scientifically studied, just a preference that's served me well for decades.

No detectable hit in the mpg, btw... When I drive the 67 Crown regularly I
get about 11 around town, 15 on the highway, and maybe 1 mpg higher in my
NYB (400). I run 20w50 in my 72 Charger and get 20 mpg (no kidding) on the
highway averaging 75 mph, though.

And yes, Chrysler even recommended 10w30 in 1967. Then again, one of my
non-Mopars used to recommend changing the oil filter with every other oil
change and I never did that either.

Cheers,
Chris in LA
67 Crown
&* NYB Salon


On 10/10/06 1:39 PM, Rob P at fristpenny@xxxxxxxxxxx wrote:

> What do you have against 10W30?  Most of the temp charts still recommend it
> for the same temp range as 10W40.  20W50 will probably give you a hit in
> mpg.  I've never used any more than 10W40 in my '70 440 and (knock wood) the
> oil pressure is still good.
> 
> Rob
> 
> 
>> From: Christopher H <imperial67@xxxxxxxxxxxxx>
>> Reply-To: mailing-list@xxxxxxxxxxxxxxxx
>> To: mailing-list@xxxxxxxxxxxxxxxx
>> Subject: Re: IML: Anybody have a '64-'66 Owners manual?
>> Date: Tue, 10 Oct 2006 08:58:00 -0700 (GMT-07:00)
>> 
>> Matt,
>> 
>> The '64 Owner's Manual is on the website, as are maintenance charts for all
>> three years.
>> 
>> The page with the oil info is:
>> http://imperialclub.com/Yr/1964/64owners/page.php?page=29
>> 
>> However, they recommended 10w30 or 5w20 depending on temperature, and I
>> wouldn't recommend either. Try 20w50 or 15w40, or at worst, 10w40.
>> 
>> I'm a purist, too, but oil has changed since 1964 and your car is now 42
>> years old. As for a lead additive, I think you mean a lead substitute.
>> Don't think you can buy anything that puts toxic lead into the atmosphere
>> anymore.
>> 
>> By the way, the 1966 has the 440 engine, no longer the 413 used in 1964-66,
>> and Chrysler expanded their recommendation to include 20w40 in non-winter
>> climates. Not sure which year you have but figured it was worth pointing
>> out that the '66 engine is shared with the later models.
>> 
>> Hope this helps...
>> 
>> Chris in LA
>> 67 Crown
>> 78 NYB Salon
> 
> 
> 
> 
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