Minor Ping/Piston Slap on Acceleration when Warm?

[Treburkulosis]

Dodge may recommend it, but mine has only seen a handful of 89 fill ups in the last 7 years. I run 87 and mine is coming up on 160k. No issues ever. I just make sure and get a reputable gas station Shell or Chevron or Texaco.

 

[ramffml]

My truck also has a ping when warm outside. Pretty much started after the second year of ownership. Truck has had a catch can since new and I changed to a 180 degree thermostat along with a tune to adjust the efan to come on sooner after I noticed the pinging under light load. No change at all even when running our 90 premium in AK lol. The only time it has not pinged in the summer is when I ran 5 gallons of VP C10!

I thought I'd try something different this year before I changed out the winter oil as I've wondered if the pinging could be caused by carbon deposits attributed by wintertime idling and short trips to my job. I ran three consecutive applications of Red Line SI-1 and was hoping for a miracle but the ping is still there and the piston tops are still dirty. I replaced the spark plugs this go around, along with a new PCV valve and made sure the intake manifold bolts were still snug. It's only 46 degrees today so not warm enough to see if anything made a difference (I don't have high hopes). Thanks to Wild One for the gear wrench advise for the plugs (it still sucks but way better than previous times)!

What oil are you running, brand and viscosity?

Have you tried switching to an oil that mitigates LSPI (these oils usually use more amounts of magnesium and less of calcium)? I did try this over the winter and I'm almost certain I had less pinging over the winter, but temperatures have also climbed here recently and I know it definitely pings more when it reaches operating temp so it might just be the cold temps that helped vs the LSPI oil.

 

[Treburkulosis]

What oil are you running, brand and viscosity?

Have you tried switching to an oil that mitigates LSPI (these oils usually use more amounts of magnesium and less of calcium)? I did try this over the winter and I'm almost certain I had less pinging over the winter, but temperatures have also climbed here recently and I know it definitely pings more when it reaches operating temp so it might just be the cold temps that helped vs the LSPI oil.

I tend to agree here. Oil and filter plays a huge role in that.

 

[BackCountryAK]

What oil are you running, brand and viscosity?

Have you tried switching to an oil that mitigates LSPI (these oils usually use more amounts of magnesium and less of calcium)? I did try this over the winter and I'm almost certain I had less pinging over the winter, but temperatures have also climbed here recently and I know it definitely pings more when it reaches operating temp so it might just be the cold temps that helped vs the LSPI oil.

Red Line and RP filter - the standard for Ramforum lol. I bounce between 5W20 and 5W30 depending on what's cheaper and can ship through Amazon prime to AK. I'll have to look into LSPI oils for a future change.