Best oil for 100K + engines?

[TheYuk]

Valvoline Max Life 5w30 and an AC Delco Filter. And I change it every 4000 miles. Truck has 94k on it.

 

[SC88]

always use Mobile one synthetic with AC delco filter. I think I will start the auto rx engine treatment on my next oil change and see if it has the same effects on this engine as my last 5.7 vortech

 

[freeway2590]

Castrol advanced Full synthetic with a fram filter, so far no problems

 

[mmeachem]

I use a synthetic blend


That's what the chevy dealer recommended

But Meineke changes my oil for 25 bucks

 

[bottomline2000]

how many of you still have cold start piston slap running synthetic oil? I'm running 5w30 Penzoil Platinum Ultra w/ napa premium filter and I have zero slap at over 200k. I got it real bad when I tried mobil 1 syn so I switched back to Penzoil and iit stopped.

 

[hoe]

never had piston slap at all.
But for the 100k mile engine I do recommended Lucas Oil Stabilizer.

 

[Singletahoe]

Castrol GTX High Mileage
Fram filter

150,000 miles

 

[domin8]

never had piston slap at all.
But for the 100k mile engine I do recommended Lucas Oil Stabilizer.

+ 1 for the Lucas. I just switched over and noticed the quieter engine immediately. Slightly concerned about ever minimal increase in oil pressure though.

Sent from my myTouch_4G_Slide using Tapatalk

 

[ktmhans]

Any problem running 10-30 mobil 1 high millage in these 5.3 motors before i pour it in? Or how about thier 0-40.

 

[ATL]

i dont like any high mileage oils, i stick to standard synthetic. and i wouldnt try 0 weight oil unless u live in some extreme cold climate