Re: [DML] oil discussion

[DMCVIN6683 <dmcvin6683@xxxxxxxxx>]

You can not run 5W30 in everything. I ran it in my old 1979 thunderbird 
with a 351 and it ate it up so quick I had to change the oil back to 
10W40 in less than 1000 miles.

Mark V


On Friday, December 3, 2004, at 10:33  AM, M5E wrote:

>
>
>
>
>   I've pretty much settled on 5W30 as being my oil of
> choice:
> A hotrod magazine article reported the largest
> horsepower gain using that grade of oil
>
> Using a super-grade synthetic, like Amsoil should lay
> to rest any concerns about adequate flow, and
> lubrication, or breakdown of the oil.
>
> I've used the Amsoil motor oil in all my vehicles,
> from V-8's to 4 cyl. Porsche engines, and have
> "enjoyed" the extended drain intervals.
>
> On drain intervals: Amsoil says their product can go
> 25,000 mithout a change. Supposedly at 12,500 miles
> you should change the filter, and add a quart. But I
> just opt for changing the oil and filter at 10,000
> miles- period. Even doing that keeps the costs in line
> with other brands of oil, and I still get to enjoy the
> superior components of the synthetic product.
>
> Some time back I asked AMsoil about mixing grades of
> oil. Example adding a quart of 20W50 to my usual 5W30
> to "stiffen" it, and asking would the grade then
> change from 5W30 to 5W50? They (Amsoil) advised that
> it would be like mixing golf balls, and base balls.
> The properties of the 2 grades of oils would not mix,
> and they recommended against it.
>
> I can report though I have had no problems what so
> ever with using the 5W30, even in a 4 cylinder high
> performance engine.
>
>
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