coming up on 30 k service 2005 ram 15004x4 5.7 hemi 4 door.
currently using 5/20 extended mobil 1 oil
the factory is recomending plug and fluids for rears and motor along with the usuals
how about the trans??
the last 2003 5.7 ram recomended trans service at 30k

planning on using mobil 1 gear oil for front and rear dif. any sugestion. Naturally will be using the posi fluid from dodge in the rear, what about the front

I have been hearing to change the rear gear oil to 75/90 vs 90/140 ??

SPark plugs, factory or after market bosch
no modifiction yet, think about exhaust and air in take mods. how about the computor any ideas.

any sugestions would be apreiciated

jmsfulton

 

You won't need the friction modifier for the front axle. Apparently, they don't make the front diff limited slip. By the book, yep, it needs plugs. It can probably go farther without too much anguish. Mine had 86K when I replaced the plugs (yeah, I know -- WAY too late). Not my choice; those were the miles when I bought it. I put in NGK 5306s. I would not put in Champions (OEM). I've never bought a good Champion plug. I haven't read anything about changing the weight of the diff fluid. Can't speak to that. For some reason, the front diff gets the lighter oil. Not sure why unless its the lower speed when 4WD is engaged?

 

You probably should change your air filter and coolant now too.

 

An excellent suggestion, my dear Watson. Capitol idea!

 

05... no mds.... y r u using 5w-20?

use factory plugs champion coppers....