0w-30 Mobil 1 Green Cap vs. German Castrol

Pennzoil motor oil
Status
Not open for further replies.
M

Mustang Man

Joined
Jun 5, 2010
Messages
160
Location
IL, USA
In 0w-30...

I am wanting to try the German Castrol but I cannot find enough of it locally to try it.

So instead I think I am going to try Mobil 1 Green Cap. Is anyone here running it? Any opinions?

Is Mobil 1 Green Cap a PAO or Group III like German Castrol?
 
why not try out Mobil 1 Extended Performance 5w30 or 5w30HM

or the Mobil 1 0w-40 is very close to the viscosity throughout the temperature range of GC
 
You can't go wrong with either, both worked well in my car. But they're two different oils. German Castrol isn't Group III, conventional wisdom is that it's mostly PAO with a decent shot of POE. Mobil 1 Advanced Fuel Economy 0w30 is marketed more for fuel economy whereas GC (at least the 06' vintage I have) states that it will reduce deposits and keep things clean and that it meets many rigorous Euro-spec's. If you're application is just for normal commuting and you're looking for the best possible fuel economy, Mobil 1 Advanced Fuel Economy will be fine. For a performance car, GC...

Mobil 1 0W-40 is closer to GC in terms of intent and performance...
 
Mobil 1 Advanced Fuel Economy 0w30 works great in my wife's PT Cruiser. Good (and improving) used oil analysis as it cleans up whatever bulk goo the previous owner ran.

I know little about "German" Castrol other than what I've read here, and based on that it was a great thing when it was new, but getting kinda dated now (and not entirely clear if its even still as good as it once was).

Bottom line- either one would work fine.
 
Originally Posted By: Mustang_Man
In 0w-30...

I am wanting to try the German Castrol but I cannot find enough of it locally to try it.

So instead I think I am going to try Mobil 1 Green Cap. Is anyone here running it? Any opinions?

Is Mobil 1 Green Cap a PAO or Group III like German Castrol?

If you want, we can get into specs =)
 
Mobil 1 0W30 seems like a wildly different oil than GC. If GC is what you were looking for, I would say Mobil 1 0W40 is the Mobil 1 to run with.

Just my simpleton's opinion, though.

robert
 
400,000+ Miles at 50%+ Idle with very hard use.
That describes many 4.6L PI with 5,000 mile OCI on MC 5W-20.
Crown Vic Interceptors do it every day of the week.

However if you dont like 5W-20 then 5w30 and 10w30 seem to do just as well (temps allowing). They even seem to do almost as well on 15w40 Fleet Oil.

If it was mine and I was a Mobil Fan I would use Mobil Drive Clean 5000 5W-20 or 5w30 on 5,000 mi OCI or Regular Mobil 1 5W-20 or 5w30 on 10,000 mile Intervals.

If your not going to extend the drains their is simply no reason to spend the extra money for synthetic on these engines. These engines are very easy on oil.
 
It is very difficult to formulate 0w30 without the base being mostly group IV. So yes, Mobil 1 0w30 should be mostly PAO. Never seen a research report that does not reference this grade as being PAO based.

"Europe's most difficult engine oil specs, 0W-30. So far, marketers have needed to formulate with polyalphaolefins to meet the stringent cold-cranking, viscosity and volatility requirements of this grade." Lube Report, 2003
 
Thanks for the replies guys. Just to answer things broadly, yes it is for a 2001 V8 Mustang GT. I looked at the specs for M1GC. It looks like it is thinner than GC. Who said cops knew how to drive, lol!

Why use a 5w or 10w when 0w flows better when cool and at start-up? Start-up is when most engine wear occurs so it makes since to have an easy flowing oil for that. 0w-30, 5w30, and 10w30 all are at 30 when the engine is warmed up.

I have about 500 miles before the oil needs to be changed so I will hunt for GC a little more.
 
Originally Posted By: Mustang_Man
Thanks for the replies guys. Just to answer things broadly, yes it is for a 2001 V8 Mustang GT. I looked at the specs for M1GC. It looks like it is thinner than GC. Who said cops knew how to drive, lol!

Why use a 5w or 10w when 0w flows better when cool and at start-up? Start-up is when most engine wear occurs so it makes since to have an easy flowing oil for that. 0w-30, 5w30, and 10w30 all are at 30 when the engine is warmed up.

I have about 500 miles before the oil needs to be changed so I will hunt for GC a little more.

By that logic, you should go for 0w50
 
Quote:
Why use a 5w or 10w when 0w flows better when cool and at start-up? Start-up is when most engine wear occurs so it makes since to have an easy flowing oil for that. 0w-30, 5w30, and 10w30 all are at 30 when the engine is warmed up.


We haven't had the comparison in discussion for a long time, but in all except the most severe cold temps, Mobil 1 0w30 is harder to pump than its 5w30 counterpart.

One cannot apply a rational view (my term) for cold ("W") properties. It's not even on the same planet as kinetic viscosity and what one might call "flow".

It's just simpler to accept that the cold flow properties are pretty much irrelevant at anything you would normally consider "flowing".
 
Not even close in visc nor in quality. GC is a heavy 0w30 meeting all the toughest Euro specs, inc the generic A3 spec. M1 is a light 30, but not even as thin as Pennzoil Platinum 5w30 and it only meets API SM and the basic Euro A1 spec, same as conventional oils. Otherwise, it's a solid 3000 mile oil.
 
Originally Posted By: Gary Allan
We haven't had the comparison in discussion for a long time, but in all except the most severe cold temps, Mobil 1 0w30 is harder to pump than its 5w30 counterpart.

One cannot apply a rational view (my term) for cold ("W") properties. It's not even on the same planet as kinetic viscosity and what one might call "flow".

It's just simpler to accept that the cold flow properties are pretty much irrelevant at anything you would normally consider "flowing".


Originally Posted By: Audi Junkie
Not even close in visc nor in quality. GC is a heavy 0w30 meeting all the toughest Euro specs, inc the generic A3 spec. Mobil 1 is a light 30, but not even as thin as Pennzoil Platinum 5w30 and it only meets API SM and the basic Euro A1 spec, same as conventional oils. Otherwise, it's a solid 3000 mile oil.

I wish I could find some cSt numbers at cold temperatures. By cold, I mean -40ºC, -10ºC, 0ºC, and 10ºC. It seems most product data sheets go no lower than 40ºC.

I am really wanting to find some 0w30 GC for my car!
 
Originally Posted By: Gene K
400,000+ Miles at 50%+ Idle with very hard use.
That describes many 4.6L PI with 5,000 mile OCI on MC 5W-20.
Crown Vic Interceptors do it every day of the week.

Where does that happen if I may? And what does 'many' stand for? More than three?
 
Last edited:
Every oil in Europe that I've looked at that meet VW 503.01, which GC does, is labeled "Fully Synthetic". Over there that means it's not a hydocracked GrpIII. That is a Audi high horsepower turbo spec. Mobil 1 0w-40 used to meet this spec in America when it was rated SL, but lost it with SM, probably because it now has more GrpIII.
 
Status
Not open for further replies.

Similar threads

W
Picked up some Mobil 1 ESP 0W-30
Replies
8
Views
636
WarEagle
WarEagle
Castrol Edge vs Valvoline Restore and Protect; 2019 Santa Fe
Replies
13
Views
937
Japanese
U
Mobil 1 ESP 5w30 vs Castrol EDGE 5w30 Euro K
3 4 5
Replies
92
Views
10K
Japanese
T
Mobil 1 Full Synthetic 0w-40 for both V8s
Replies
4
Views
662
ammolab
F
Mobil 1 Euro 0W-40 vs Mobil 1 Supercar 0W-40 in a 2015 Camaro SS
2
Replies
32
Views
2K
FASTFATBOY
Back
Top Bottom