High mileage motor thicker oil?

[GMTMark]

I use Mobil 1 5w30 without any problems at 160,000 on the factory engine. Factory oil pressure gauges are not accurate.

 

[Cheap Heap]

How high ppm does it have in zinc and phosphorus? FWIU if you get too high of a concentration, it'll plug your cat.

Well, I was fully preparing for a rebuild with almost 300k on it (i.e. LS swap) but with the oil switch I actually think this motor might be staying for awhile. I figure I'm on borrowed time on all these components at this point. If I can get another few years out of this motor and cat, I'd call it a win.

I also own a turbo Subaru. A lot of the gas turbo guys swear by Rotella. I've never heard of any issues with plugging up cats. Granted that's much different than a SBC but the ej25 turbo's are more particular about literally everything compared at a SBC. I'm willing to roll the dice and so far it's given the real world, day to day results I was looking for.

 

[RDF1]

Yep. Thats why i always used Delo diesel oil.

 

[jjester6000]

I run 20w50 in my '95 Suburban with a 350 TBI.

It has a lot of blow by, but that is to be expected for a truck with over 330k on it.

It idles around 25psi and goes up to 50 when driving.

 

[Supercharged111]

Oil flow is more important than oil pressure. Oil flow removes heat.

 

[LVJJJ]

yur oil pressure is perfect. It ain't broke, don't try to fix it

 

[Crookedaxle]

Here in MN, my last brand new truck was a 2013 F150. Going into its 3rd winter, the seams at the bottom of the doors were bubbling up. Making big payments on a truck that was already rusting - NEVER again!

Winter wins up here.

The rotten assholes put Magnesium Chloride on some of the dirt roads around here which is even more damaging. I have a pit at home. I walk around under my vehicles while I'm changing oil and blast areas with Liquid Wrench.

 

[Supercharged111]

Sounds like the **** they started using here. I thought it was something chloride. They also put down some **** to keep the dust down on the dirt roads. It's absolute murder on metal. Thankfully my junk is rot free, but I do have to keep a wire brush handy to make sure it stays that way.

 

[98chevy2500SS]

If only the DOT would use spread something else on the roads other than the chloride ****. Definitely can't wait until winter is over, sadly it has just begun.

 

[Supercharged111]

If only the DOT would use spread something else on the roads other than the chloride ****. Definitely can't wait until winter is over, sadly it has just begun.

Yeah, like nothing at all? Let Darwin do his damn job.