I'm afraid I cannot be much help. Over the past 5 years I have gone
totally to AmsOil products and am extremely happy with them. I use
AmsOil full Synthetics in my Porsche 911 and 91 300D, but of course, I
still see people who use all kinds of oils. BTW, recent oil tests on
all my vehicles and the tests came back extremely clean. I was thrilled
with the reports ;-)
The oil business is always playing with their formulas and I cannot keep
up with them. Sorry - I know nothing about Castrol's Synthetic and
can't help there either.
Valvoline makes a great product but if you want to try something
different I recommend Amsoil - I can sell it to you or you can get an
inexpensive "dealership" which cuts your cost dramatically. Shipping is
very reasonable as well. I am very happy with it - it holds up well
and does not seem to drop viscosity when the engine gets up to full temp.
Here's some info on the Amsoil Base Stocks:
I don't like to appear to be advertising on this forum so I will reply
privately to future comments. I can help with pricing as well.
Have a great day!
On 9/18/2016 9:23 PM, Curley McLain wrote:
do you have any info or insight on how the valvoline full synthretic
compares to M1? I am curious if the base stocks are similar, and if
the performance is similar. I think I will use the Valvoline in the
Merkun engines, but after the bad experience with castrol so-called
synthetic, I am not sure I want to try it in an OM603. My 616s get
so few miles that I leave them on Mobil Dino oil.
uhOh! Nuther oel thread....
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