[DeTomaso] Clevelands, Redline, & ZDDP

pantdino at aol.com pantdino at aol.com
Wed Jun 9 22:12:52 EDT 2010



I have never heard of using 10W-30 in any old engine unless you were driving in freezing temperatures.

Choosing an oil is not brain surgery.
As oil gets hotter it tends to thin out.
If you use an oil that it too thin at running temp you won't have enough oil pressure
But oil cools and protects bearings by FLOWING, not by pressure per se.
So if the oil is so thick it is not flowing, it will not be cooling and protecting either.

One cannot choose an oil without knowing how the car will be used,
If you will be starting a car with a 10 qt pan at 32deg F and just putting around town looking cool, 10W30 might be a good choice.
20W-50 will be a horrible choice because it will be like molasses at startup and your engine will suffer some metal-on-metal abrasion. then the oil will never get warm enough. 

But if you plan to track the car and see oil temps of 250 degrees, the 10W-30 oil would be like water and not lubricate.

5 or 10W-40 is a good choice for how most people use their cars.

Jim Oddie






-----Original Message-----
From: MikeLDrew at aol.com
To: guson at home.se; detomaso at realbig.com
Sent: Wed, Jun 9, 2010 4:05 pm
Subject: Re: [DeTomaso] Clevelands, Redline, & ZDDP



n a message dated 6/9/10 13 57 11, guson at home.se writes:

 Won't a 10W30 oil be very runny for an old Cleveland at operating temp?
 
It will be 30-weight at operating temp.   A bit thin for my tastes, but 
hen I know nothing about oil; my beliefs are based solely on superstition and 
ribal knowledge. :>)
Mike
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