Quiet & Smooth...PHM Jeep 4.0

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oklahoma
Changed the oil last night in the 4.0L w/76k. I had been using Trop-artic syn-blend 10w30. But I recently bought some Pennzoil HM formula for my magnum V8 w/178k. However, I did not ave the heart to switch the V8 off of the Mobil-1 HM so I had to find a use for this Pennzoil HM dino. I put it in the 4.0L and I immediately noticed it was quieter & smoother running. Heck I almost wish I'd have given it a try in the 5.9L but I think the main reason the Pennzoil HM worked so well in the 4.0 is because of the combination of the flat-tappet motor & a robust additive pkg...not sure if it would hav mattered as much in the roller magnum motor? Just thought I'd share and give 2 thumbs up to Pennzoil HM formula.
 
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3,130
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Phila,PA
 Originally Posted By: FastSUV
Changed the oil last night in the 4.0L w/76k. I had been using Trop-artic syn-blend 10w30. But I recently bought some Pennzoil HM formula for my magnum V8 w/178k. However, I did not ave the heart to switch the V8 off of the Mobil-1 HM so I had to find a use for this Pennzoil HM dino. I put it in the 4.0L and I immediately noticed it was quieter & smoother running. Heck I almost wish I'd have given it a try in the 5.9L but I think the main reason the Pennzoil HM worked so well in the 4.0 is because of the combination of the flat-tappet motor & a robust additive pkg...not sure if it would hav mattered as much in the roller magnum motor? Just thought I'd share and give 2 thumbs up to Pennzoil HM formula.
Being the 5qt jugs are only $13.50 at Wallmart, its a very nice oil any way you look at it.
 

FastSUV

Thread starter
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1,081
Location
oklahoma
yeah...unfortunately I got this a few months back when it was 16.50...but I hope the price stays low. And of course the 4.0L takes 6qt so I had to drop 4 bucks for an extra qt.
 
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