Any body else discovered the German Castrol at Autozone? This is my next brew for my EVO.

Check this out: from www.bobistheoilguy.com/

It is time to dispel the notion that 0W-30 oil is too thin when our manual calls for 10W-30. A 0W-30 is always the better choice, always. The 0W-30 is not thinner. It is the same thickness as the 10W-30 at operating temperatures. The difference is when you turn your engine off for the night. Both oils thicken over the evening and night. They both had a thickness, a viscosity of 10 when you got home and turned your engine off. That was the perfect thickness for engine operation.

As cooling occurs and you wake up ready to go back to work the next day the oils have gotten too thick for your engine to lubricate properly. It is 75 F outside this morning. One oil thickened to a viscosity of say 90. The other thickened to a viscosity of 40. Both are too thick in the morning at startup. But 40 is better than 90. Your engine wants the oil to have a thickness of 10 to work properly. You are better off starting with the viscosity of 40 than the honey - like oil with a viscosity of 90.

I repeat: More confusion occurs because people think in terms of the oil thinning when it gets hot. They think this thinning with heat is the problem with motor oil. It would be more correct to think that oil thickens when it cools to room temperature and THIS is the problem. In fact this is the problem.

This is the end of lesson number one.

aehaas

About the author:
Dr. Haas is a physician and surgeon. He graduated from the University of Florida with a degree in biochemistry with honors. He studied motor oils since high school where he did independent studies on this topic. He studied the properties of viscosity.

 

Bump for an old thread. Just added some of the German spec stuff to the car this afternoon. Anyone else running it?

 

my next oil change i will add 10w-40 or 0w-40 cause i have ext.temps above 30 celsius and in the morning as low as 8-10celsius it will be mobli1 for sure

 

eh?

 

this may be a bit off topic bit occurs to me that there are several good points to running a thin oil.
1, a thin oil pumps easier, which would suggest that it would flow quicker and thus tend to cool better.
2, would tend to get into tight bearing races better than thick and be renewed more often

 

Multi-viscosity oil thickens when it heats up, that is the whole idea behind it.

On a cold start you have a light weight, thin oil that is easier for the oil pump to push it to all the critical parts of the engine and prevent damage ot all of the rotating components as well as making it easier on the starter.

As it gets hotter it starts to increase in viscosity to provide added protection for high loaded components.

Have you ever poured say straight 40 or 50 weight oil? It's not as bad as 90wt gear oil but it sure doesn't pour like 10-30 does.

Just my $.02

 

a lot of euro folks run the 10w60 stuff.

 

I have a friend who runs the "Green" German Castrol in his Z06. From what he's told me, finding it in stock is very rare.

According to those forums, Mobil1 is a true synthetic too...

 

I use Castrol Racing 10w60 oil in my VI. I service my car in Mitsubishi specialist rally shop and they use the same stuff in rally cars. I pretty much took their word that this is the best stuff when the going gets tough.

 

Sorry to bring back an old thread, but have any of you tried the German Castrol in the EVO yet?

This stuff is supposed to be one of the thickest 30 weights around, almost as much as most 40 weights, so I'm curious as to what kind of UOA's it will produce in a turbo car, like the EVO...

naurcx: Yeah, the green stuff is almost all gone and only the new "gold" stuff can be found in most places. Luckilly it's just as good, if not better, than the green stuff so tell your friend to fear not

 

I've been running the new GC for 3 oil changes now, about 9,000 miles. I started sometime in late May. At the end of this fresh batch in there I'll be sending a sample off to Blackstone. I'll be around 89,000 miles by then so this should be interesting...

 

if the oil is green then it's authentic german oil and it's really good. but good luck finding that **** =)

 

Just for the records.Castrol is made in austria and they sponsor a lot of motorsport events and team. especially rally racing.

 

Mitsu, where are you finding this stuff locally?

 

Autozone stocks it in the US pretty much exclusively, you can find it at Walmart in Canada from what I hear. Guys, make sure that the bottles you purchase have the BP logo on the back and say "Made in Germany" as well. This is what replaced the fabled '02 batches of the "green stuff" and is showing to be just as good if not better even by the standards of the elv followers