Cold crank viscosity...how low is low enough??

Messages
1,381
Location
Southeast Kentucky
I live in southeast KY where temps from December through February can drop to 0F and occasionally a few degrees below 0F. The best Ccv I have seen for a dino based 5w20 is [email protected] C for Chevron/Havoline. Is that good enough for a vehicle that is never garaged? How does this compare to M1 0w20 that is 5500 at the colder standard of -35C ? I realize this is a bit of a loaded question, just seeking opinions. I definitely want to stay with a 20 weight for warranty issues. I use Castrol GTX 5w20 during warmer times for the year. My vehicle is a 2002 3.0 OHV V6 Ford Ranger. Thanks!
 

MolaKule

Staff member
Messages
21,725
Location
Iowegia - USA
I used to live in South West Kentucky and we never saw a day that any of the cars wouldn't start, even with dino 10W40's. I would think that M 1 SS 0W30 would flow a bit better at those lower temps, if that is your major concern. In addition, you are paying for and receiving a true synthetic. [ June 11, 2003, 02:27 PM: Message edited by: MolaKule ]
 
Messages
7,775
Location
Oklahoma
Got the similar size engine in the wife's Accord and used Quak. State 5W-20 all year. Believe it or not, we had some negative thermostat readings this past winter in Oklahoma and I didn't notice anything different than compared to summer cranking. Engine started fine, oil pressure jumped quickly. I had just recently changed to a 5W-30, actually last week because of the high heat in the summers in OK. A lot of other Honda owners don't like the 5W-20's, too thin they feel and I believe them. I am also sending out a oil sample for analysis this afternoon on the Quak. State 5W-20 to see how it held up during the cold winter. I personally like Pennz. 5W-20 because of the UOA then recently saw that the Castrol 5W-20 is pretty loaded up too. I think you'll be good to go with what you got. If you change every 3K, dino will do you well. If longer, got to go synthetics.
 

Jay

Messages
1,607
Location
Idaho Falls, ID
quote:
Originally posted by mikemc: ...The best Ccv I have seen for a dino based 5w20 is [email protected] C for Chevron/Havoline. Is that good enough for a vehicle that is never garaged? How does this compare to M1 0w20 that is 5500 at the colder standard of -35C ?...
A dino oil's viscosity will roughly double when chilled to -35*C from -30*C. A synthetic's viscosity will change by a factor of about 1.7 over the same temperature range. So the Chevron 5w-20 will have a CCV of about 10,400cP at -35*C. [ June 11, 2003, 08:17 PM: Message edited by: Jay ]
 

Al

Messages
19,206
Location
Elizabethtown, Pa
I suppose you would know. But central Pa. is way way north of you and 0 is usually a normal low for the winter. Now granted we have had some years where we got as low as -17 F. But anyway 10W-30 Mobil 1 is more than adequate here in Pa. so obviously it would be O.K. for you. It pours at -45 C (-49 F.) 0W-20 pours at -57 C (-70 F)
 
Top