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Feb 3, 2009 | 11:25 PM

#21

95MaroonMonster

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Joined: Jan 2009

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From: Indiana

lol
synthetic oil can cause a leak if there was a previous leak that was plugged by particles in the dino oil, that are removed by detergents in the synthetic

Feb 3, 2009 | 11:29 PM

#22

Laramie1997

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Joined: Sep 2008

Posts: 6,980

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From: Springfield MO

Yea I knew that I just didnt feel like going in depth

Feb 4, 2009 | 12:16 AM

#23

PurplDodge

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Posts: 8,321

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From: Indiana

Quote:

Originally Posted by Laramie1997

BTW I think the only reason purpldodge uses RP is because of the color

That is only half of the reason!! I run it because it lasts longer than other synthtics. Oh and because its purple. If I spilled some on the truck I would'nt be able to tell.

I bleed PURPL!!!

Feb 4, 2009 | 12:20 AM

#24

Laramie1997

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From: Springfield MO

Purpl, you prove my point. lol

Feb 4, 2009 | 12:39 AM

#25

PurplDodge

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From: Indiana

Oh yeah, its purple.

Feb 4, 2009 | 01:53 AM

#26

madmax0r

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From: Austin, TX

YOur truck is Purple?

Feb 4, 2009 | 09:05 AM

#27

charlie1935

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Joined: Mar 2004

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From: DuQuoin,IL.

Quote:

Originally Posted by 360dodgeram360

i use valvoline 5w-30 and a quart of marvel mystery oil right now. and Jason is right, thicker oil in the summer and thinner in the winter generally. in the summer the oil temp is hotter causing the oil to thin out. in the winter the oil doesn't heat up as much and stays thicker and doesn't circulate as readily. i.e. if you have 20w50 oil and it gets real cold you will have to change your oil just to start your truck.

I've used 20w50 in my 87 since it was new. Started up just fine as low as -10. At 170,000 miles and no engine problems.

Feb 4, 2009 | 09:30 AM

#28

Gary-L

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Joined: May 2005

Posts: 8,663

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From: Central Oklahoma

Quote:

Originally Posted by Laramie1997

They use it because its syntheitic, I used to run Valvoline 10w-40 then switched to Rotella 15w-40, since its a little cheaper. I have thought about going to synthetic, but from what I have heard, if you have run a dino oil for a long time the syn oil will leak.
BTW I think the only reason purpldodge uses RP is because of the color

That is a persistent old wives' tale that won't die. You can switch to Synthetic today and it won't leak.

Feb 4, 2009 | 09:42 AM

#29

shawngrace5

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Joined: Jan 2009

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AMSOIL 10w-30, with an AMSOIL Absolute Efficiency filter, only way to go man, good for 8,000 Miles, or they have oil that extends service life to 1 year, 25,000 Miles.

GOOD ****!!! I run their racing oil in my 700hp late model and doubled my oil change life from Mobil 1 (SUCKS)