STP oil treatment

Delawaresurfman · Mar 19, 2016

I have a 2002 dodge 5.9 with 162,000 miles. I'm the original owner. This is the first year of the new body style with the old motor. This is the
motor right before the Hemi. It does not smoke or use excessive amounts of oil. Oil has been change regularly.
Does anyone use STP oil treatment? Would anyone recommend using it? Is it better to leave well enough alone and just keep changing the oil
at 3000 mile intervals? Thanks for your thoughts, John

D beatty · Mar 19, 2016

I will not use STP after seeing it snot up an engine and is hard to get out of engine. The only thing I will use is Lucas oil stabilizer a much better product.

J.Wondergem · Mar 19, 2016

Like the other poster, I wouldn't use STP. I might try some high millage oil.

ASEguy · Mar 20, 2016

I would not use STP oil treatment. I would change oil at the 3,000 mile mark or sooner depending on driving habits.

T in NE · Mar 21, 2016

Just stick with whatever oil you've been using.
Stp swells your oil seals. If it's not leaking it's pointless.

2002sliverado · Mar 21, 2016

I am no fan of STP either. I just use a high quality motor oil and change it as recommended. I had a 98 model Dodge with the 5.9 liter V8 engine. It had over 200k on the odometer when I got rid of it. Just as an FYI on the engine. There were two "weak points" in the engine. Twice it "sucked in" an intake manifold gasket. When this would happen, it would start to consume oil and eventually would start to "ping" when under acceleration, particularly when pulling a trailer. The other weak point is a gasket in behind the water pump near the timing chain cover. This was a slow leak and you would typically smell hot coolant when you shut the engine off after it had warmed up. It was a more obvious odor in the summer. If your engine is going through some oil, thus why you might be considering the STP oil treatment, I maybe start by looking into the intake gasket failure. Oil consumption was NOT an issue with that engine in my truck, other than when the intake gasket failed. At the time I changed oil at around 3000 miles, the color was still mostly brown.

ericlb · Mar 22, 2016

stp and modern engines dont mix

casenut1 · Mar 22, 2016

My father started trucking in the early 60's, he had a cab-over chevy with a gas engine. He put in one can of STP with every oil change and ran it till 69 when he bought the GMC Astro 95. Never had any problens using the STP.

D beatty · Mar 22, 2016

I had 2 auto supplies that I bought parts and had machine work done. They showed me what a engine block looked like after using STP and it looked like snot and was hard to boil out of oil passages of block.

souNdguy · May 3, 2016

I had a dodge 5.9. it was a 98. I ran it good and hard, and sold it to work, and I see it every day, running hard.

It got walmart oil changes at 3000miles it's entire life.. it's heading toward 300k now.

it got an ignition tune up and plugs a while back. probably the third set it's had it's entire life. still runs and shifts good.

It likes to have it's throttle body cleaned about every 120k miles or so.. no biggie. it's been thru a set of front bearings in the 4wd axle.. again.. no biggie.

keep the stp at the store.

mj · Jun 23, 2016

(quoted from post at 16:42:01 03/19/16)

Like the other poster, I wouldn't use STP. I might try some high millage oil.

High mileage oil is part synthetic with the idea being to swell the seals, or so I have been told. 8)

STP oil treatment

Delawaresurfman

Member

D beatty

Well-known Member

J.Wondergem

Well-known Member

ASEguy

Well-known Member

T in NE

Well-known Member

2002sliverado

Member

ericlb

Well-known Member

casenut1

Well-known Member

D beatty

Well-known Member

souNdguy

Well-known Member

mj

Well-known Member

Similar threads