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Old 02-23-2010, 06:16 PM
rimfire,22 rimfire,22 is offline
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What type of oil u use???

Hello to all,

In my 01' Durango V-8 I want to try a synthetic oil that a 5W-20 instead of the typical 5W-30 weight. Any issues using this lighter weight oil????

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Old 02-23-2010, 07:33 PM
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Any reason for the switch? I run 5-30 M1 Truck and Suv synthetic in mine. I wouldn't recomend switching to a 5-20.
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Old 02-23-2010, 07:35 PM
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M1 5-30.
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Old 02-23-2010, 07:56 PM
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5-20 and 5-30 are the same weight. the 20-30 is how long before the oil breaks down. 10w30, 20w30 are heavier/thicker oils
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Old 02-23-2010, 08:05 PM
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Originally Posted by moparsz View Post
5-20 and 5-30 are the same weight. the 20-30 is how long before the oil breaks down. 10w30, 20w30 are heavier/thicker oils
Not true at all, the first number is the cold weight, the second is the running temp weight.
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Old 02-23-2010, 08:10 PM
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Hi guys/gals,

OK you telling me yes or no BUT your not telling my why.
I just want to try it once to see if I gain any MPG. That's all. So is it OK just once????

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Old 02-23-2010, 08:24 PM
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You won't gain any mpg going from a 30 to a 20, but you will be sacrificing protection to run it. Just stick to the 5-30.
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Old 02-24-2010, 01:52 PM
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The engine is designed for 5w30. Run that. Bearing and pump tolerances are designed for that viscosity.

Mobil1 5w-30 with a Mobil1 filter. M1-204 I think it is...
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Old 02-24-2010, 04:21 PM
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Originally Posted by caulk04 View Post
The engine is designed for 5w30. Run that. Bearing and pump tolerances are designed for that viscosity.

Mobil1 5w-30 with a Mobil1 filter. M1-204 I think it is...
I would agree; use 5w30. The cars that use 5w20 are made with closer tolerances. The 4.7 OEM operating temperature is 195 degrees, which thins out 30 weight plenty enough.
Mobil1 5w30 and NAPA Gold 1085 filter
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Old 02-27-2010, 06:37 PM
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I'm surprised more of you don't run Amsoil, how come?
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Old 02-27-2010, 07:25 PM
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15w40 (IIRC) Shell Rotella T with a Bosch filter. Got tired of 60 dollar oil changes with as much as I drive.
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Old 02-27-2010, 07:48 PM
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I'm surprised more of you don't run Amsoil, how come?
$$$

How much is Amsoil a qt, like ~$10? Thats $60 just for oil, I can get M1 Synthetic for $4.50 a qt at Wal-Mart. That makes it about $30 for a full oil change, half of what it costs just for the Amsoil.

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15w40 (IIRC) Shell Rotella T with a Bosch filter. Got tired of 60 dollar oil changes with as much as I drive.
You run 15w40? Thats pretty thick stuff for such a cold climate to be running. I would deffinatly change out to a 5-30 or 5-40 if you need thicker oil. With a 15w and cold start it's going to take longer for the oil to circulate, causing more wear on your parts.
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Old 02-27-2010, 08:37 PM
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Originally Posted by Tydog07 View Post
I'm surprised more of you don't run Amsoil, how come?
Local availability and price. I would rather just pick up oil when I need it.

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Originally Posted by RyanWJ View Post
15w40 (IIRC) Shell Rotella T with a Bosch filter. Got tired of 60 dollar oil changes with as much as I drive.
I sure as hell hope you aren't running 15w40. Switch to the right viscosity and your engine will like you much better. I bet your mileage goes up too.

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$$$

How much is Amsoil a qt, like ~$10? Thats $60 just for oil, I can get M1 Synthetic for $4.50 a qt at Wal-Mart. That makes it about $30 for a full oil change, half of what it costs just for the Amsoil.
$4.50 for Mobil1? Yeah...try over $6. Keep an eye out at AutoZone, they often run a special of 5qt Mobil1 AND a Mobil filter for $29.99. I'll pick up 5qt and a filter for one of the trucks or the RZR whenever I see it on sale. Too bad Mobil doesn't make a filter for our car.
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Old 02-27-2010, 09:19 PM
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Local availability and price. I would rather just pick up oil when I need it.



I sure as hell hope you aren't running 15w40. Switch to the right viscosity and your engine will like you much better. I bet your mileage goes up too.



$4.50 for Mobil1? Yeah...try over $6. Keep an eye out at AutoZone, they often run a special of 5qt Mobil1 AND a Mobil filter for $29.99. I'll pick up 5qt and a filter for one of the trucks or the RZR whenever I see it on sale. Too bad Mobil doesn't make a filter for our car.
The 5qt jugs are $22 at walmart, thats 4.40 before tax a qt. Sure if you buy them one qt at a time they cost more, but I'm pretty sure you can't get that kind of price break with Amsoil.
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Old 02-27-2010, 10:26 PM
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Originally Posted by Tydog07 View Post
I'm surprised more of you don't run Amsoil, how come?
I used to run Amsoil until it got too expensive. I now run Royal Purple which is cheaper (but still expensive oil changes) and a performance oil.
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