ive heard the 5w-20 increases gas mileage but lowers engine life, so im sticking with what i know, oh and i still think its the sending unit the dealer said they could find anything wrong, but i might replace the sensor anyways.

 

pretty sure if you have mds and your not running 5-20 its bad for the motor... pretty sure that has no relation to your gauge though i have an 08 and it does the same thing.

 

sicne the truck was first bought its been running full syn 5w-30. would i have problems if i went ahead and changed back to 5w-20?

 

Nope, go ahead and change it back. The small passages in the MDS system really require 5W20. It will not effect engine life at all.

 

my girlfriends gmc did that for a while. before long the valves started making alot of noise then it spun a bearing :P

 

Any updates on this? the oil pressure gauge on my 2008 dodge ram seems to be fluctuating. whenever i am at a red light the pressure drops just below the normal mark and when i start to accelerate it goes just below 3/4. not sure if it has been doing this before, but i just noticed it today on my way to the gas station.

 

anything? not sure if this is supposed to be normal or not. was checking the other posts but still didnt find out or not

 

alot of guys in this thread who have the same truck and year said it was normal for theirs

 

its normal thats why there is a gauge. higher RPM's cause oil pressure to rise its just how things work dont worry about it

 

@weedhoe
@Paratrooper

Thanks, wasnt sure if this was normal or something was wrong. really havent looked at the guages before and when i noticed it, i was a little worried. but since this is normal for the truck no need to sweat it anymore