Recommend 12cst synthetic oils
- Thread starter Dan4510
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I vote for GC or Valvoline High Milage synthetic 10w30
Not a syn, but I've used Chevron and Havoline High Mileage @12cSt with good results.
Just mix your favorite 30 and 40 weight synthetic.
And this begs the Question..8.5 cSt. oil seems to be fine in the hottest parts of the U.S. Is 12cSt oil really necessary?
And this begs the Question..8.5 cSt. oil seems to be fine in the hottest parts of the U.S. Is 12cSt oil really necessary?
What are you using this in?
GC fits the bill perfectly. M1 EP 10w40 would be a good combo, if only you could find it. M1 0w40 might be the convenient option. You might try a M1 EP 10w30/15w50 home blend. Use a blending calculator:
http://www.baseoils.shellglobalsolutions.com/calculations/blending_pop.asp
http://www.baseoils.shellglobalsolutions.com/calculations/blending_pop.asp
GC (Castrol Syntec 0w-30)
12.1 cst
12.1 cst
Mobil 1 "Classic" 5w30 is 11.3
I have begun searching the web for the same information and (although not finished) I have found so far:
Pennzoil High Mileage 10w30 = 12.0
German Castrol 0w30 = 12.0
Castrol GTX High Mileage = 12.1
Castrol Syntec 10w-40 = 13.2 (lowest 40 wt found so far)
of course you want only syn, but I am looking at both...Anyone have other suggestions?
Pennzoil High Mileage 10w30 = 12.0
German Castrol 0w30 = 12.0
Castrol GTX High Mileage = 12.1
Castrol Syntec 10w-40 = 13.2 (lowest 40 wt found so far)
of course you want only syn, but I am looking at both...Anyone have other suggestions?
There's an echo in here...
GC for PAO synth
Syntec 10w-40 for a Group III synth. (13.2 cSt)
The PZ and Castrol HM oils for non-synths
GC for PAO synth
Syntec 10w-40 for a Group III synth. (13.2 cSt)
The PZ and Castrol HM oils for non-synths
GC is not a PAO synthetic.quote:
Originally posted by ToyotaNSaturn:
There's an echo in here...
GC for PAO synth
Syntec 10w-40 for a Group III synth. (13.2 cSt)
The PZ and Castrol HM oils for non-synths
But I do recommend it for his application and what he is asking for.
Umm, the primary base oil is certainly PAO.quote:
Originally posted by BlazerLT:
GC is not a PAO synthetic.quote:
Originally posted by ToyotaNSaturn:
There's an echo in here...
GC for PAO synth
Syntec 10w-40 for a Group III synth. (13.2 cSt)
The PZ and Castrol HM oils for non-synths
But I do recommend it for his application and what he is asking for.
Castrol TXT Softec group III Synth
sold at your local BMW dealership as BMW High Performance Synthetic 5w30. I think they sell it for around $5/quart. Check the UOA section under BMW High Performance. Some very good results there.
CST is 12.2
sold at your local BMW dealership as BMW High Performance Synthetic 5w30. I think they sell it for around $5/quart. Check the UOA section under BMW High Performance. Some very good results there.
CST is 12.2
Torco SR-1 CST 12.05. Factory direct $6.75 qt $6.25 shipping no matter how many qts you buy.
I have been using this oil for some time now in my Ford work and personal vehicles (5W-20 & 5w30). Smooth, quiet and noticably better MPG over GC in the vehicles that use 5w30.
Not cheap, but another alternative
I have been using this oil for some time now in my Ford work and personal vehicles (5W-20 & 5w30). Smooth, quiet and noticably better MPG over GC in the vehicles that use 5w30.
Not cheap, but another alternative
Please tell me your machinist did not fit forged pistons to stock 340 mopar piston to cylinder wall clearances of .0005- .0015.
If can get 0w 30 GC I would go with that for a good synthetic. Providing your jetting is good and fuel dilution is not a problem,
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