jamesgangnc wrote:
I agree about the single viscosty but it's just hard to find good
single grade oil at the local discount stores like wally world. And no
one recommends single viscosity in your car for summer. Even though
you will change it again before winter.

On the water issue I am skeptical that "marine" oils have anything
specific in them to improve their ability to deal with water. Water
and oil don't mix and you don't want them to mix. Motor oil does not
"attract" water like brake fluid does. Beat them together for a while
and you get a nasty white mixture that is not good for lubricating.
I'll have to hear some details before I believe this one.

Gene Kearns wrote:
On Mon, 05 Jun 2006 06:19:08 -0400, Big gus
wrote:

Hi guys thanks for all the advice
posted in the past.

well me and the guys at the maria were discussing oil.

Some use "marine" grade while others do not

Some use Valvoline strait 50 weigh "racing" oil

was wonder what every ones thoughts were?

Thanks
m


Marine grade oils are formulated for a damp environment. Not a bad
idea.

Using a straight weight oil in warm climates is probably preferable to
a multi viscosity oil. If you don't need cold weather starting
formulation, why give up superior EP lubricity?

Before you feel the need to give the dry start lecture, consider that
the first number in a multi-viscosity oil has nothing to do with
viscosity. If it did, there wouldn't be any 0W-40 oils... which there
are.

IMHO, synthetics are preferable.

Modern engines are built with such tight tolerances, using a thick oil
probably does more harm than good.

From what I've gleaned looking into this, is that they do actually
handle moisture better. One thing that keeps coming up is that they
typically have no chlorine in them, and that the additives in oil break
down and change because of moisture, and these marine oils are more
stable if they get moisture.