Anyone using 10w30?

The past 5 years I always do my changes with 5w30 M1 EP, but I took a long trip out of my way to go to walmart to get a 5 quart jug, and they only had 10w30 EP in stock, so I grabbed that.

Common wisdom would say it is fine, since I am in NY, wont see many temps below 0 degrees F.

Wanted to make sure however, since the 3.7 is driven off an oil-pressure tensioned timing chain I believe.

 

You'll be fine, if you check Mobil 1's site you can see that the viscosity of 10w-30 and 5w-30 are pretty close and the 5w-30 is actually a little thicker when warmed up. I've actually got some 5w-40 quaker state syn. I'm gonna run eventually in mine.

 

I cant imagine it hurting either. I have done it before with my wife's car. I ran 5w-20 in it by mistake when we had been running 5w-30. I know the viscosities were slightly different but not enough to cause issues in my opinion. They are all relatively the same and like you said beings you are changing the Winter or W grade but you are staying above 0 I cant see a problem.

 

I run Mobil 1 full synthetic High Mileage, 10W-30. No issues.

 

I run 5w-30 and have dont 10w-30 before during the summer months if the shelf was out of 5w-30. I wouldnt run it in the middle of winter here in WI since we do see that 0 degree mark every once in a while, but through fall you should have no problems. 5w-30 and 10w-30 should be EXACTLY the same once at operating temp, the only difference is the cold viscosity. Some argue that 10w-30 is better than 5w-30 in terms of protection though because it will have less additives since it has a smaller temperature range than 5w-30.

Running 5w-20 in the truck scares me ..... The whole milk I drink is thicker than that stuff, lol.

 

Hey now, bite your tongue. Nothing wrong with the 5W-20. Its actually what mine calls for....its even printed on the filler cap.

 

Lol, I dont know what was the deciding factor for Mopar requiring the different oils in similar climates. Mine calls for 5w-30. Alot of cars and trucks run 5w-20 now though .... better fuel efficiency out of it. Maybe thats how some of you guys are squeezing out 17 mpgs in the city

 

When I used to take my 02 4.7L Dakota to the dealership for oil changes in North Dakota they'd put, if I am recalling correctly, 0W-30 in it for winter.

In Minot though the average winter/January low temperature is 2 degrees below zero & can reach 50 degrees below zero (NOT including wind chill...)

 

eff that.....i'll stick with my maybe 20 for a couple of days in January...lol

 

I live in Canada and although I don't live in an igloo the average January low is 10 below with many days at 40 below. 5W30 works fine for me but 10W30 is a no go for winter.