Little overkill with 5,2L or what?

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Brother in Law owns a 99 Ram with a 5.2L/318 cubic inches. Just got it back on the road, it has 71,566 original miles. Purchased it off an older gentleman who bought it new. My question, he has ran Techron Concentrate Plus Fuel Cleaner treating 15 gallons of gas a tank of it--skipped a tank--than another batch with 15 gallons--skipped a tank and now just dumped in Regane High Mileage that treats 21 gallons and filled his truck with 21 gallons of 87 octane fuel. That's all he uses is 87 octane which is what it calls for in his owners manual. He just changed his plugs before this last treatment with the Regane & plans on taking a road trip. Says hes done for treatments after this for atleast 3000 miles?
 
Probably won't get much scientific data in this thread but I would say that is overkill. I have put cars on the road that have been sitting a while and all I do is fresh gas and they run fine afterwards. If I do any fuel system treatment it is always Redline SI-1, and it's rare for me.
 
Any additive at all was probably overkill.

The 5.2 (318) is just about indestructible, but in "Magnum" form it does have one simple mechanical design weakness that can do a whole lot of insidious damage over time: the lower intake plenum gasket can fail, letting a lot of oil mist get sucked into the intake which (together with the lean condition on nearby cylinders) causes a lot of pre-ignition and detonation. If it pings a lot under moderate load and consumes a bit of oil, pull the intake and bulltproof the lower intake with a kit from Hughes Engines. I've seen these engines run 200k+ miles even with the severe detonation and mixture imbalance- that's how tough the rest of the engine is.
 
Always luv when you put your touch/feedback on things pertaining to Mopar products 440Magnum!!
smile.gif
 
Originally Posted By: thorromig
Always luv when you put your touch/feedback on things pertaining to Mopar products 440Magnum!!
smile.gif




Well, I've got >3/4 of a million miles on them... almost half of that on a 318.

When I was much more active in the car hobby and swapped wrenching weekends with friends, I've worked on Fords, Chevies, a magnificent Caddy 472, Buicks, a Pontiacs, an Olds, and a a Mazda or two. I love everything mechanical.

They each have their own good points- I love the initial oil flow into the distribution galleries on the small-block Chevy more than just about anything... the Mopars (big and small) would benefit enormously from that central equivalent of the human aorta that the SBC has. Its why the SBC doesn't have to waste nearly as much power turning its own oil pump. But I always thanked the Mopar gods that I didn't have to live with the small-diameter SBC lifters or short conrods. But once you're behind the wheel? Meh. They both run great most of the time, and are tougher to kill than cockroaches. Throw the Windsor and FE Ford blocks in that category too.

I just happen to be pretty familiar with what realistically goes right/wrong with the 318/5.2, as well as a lot of misconceptions about it. Example- its NOT "sludge prone" as is often claimed, its prone to that lower intake plenum failure that can, under the right conditions, create a metric poopload of sludge. But its not something inherent in the engine, the way it was with the later POS 2.7L v6 or the more problematic of the Toyotas from the early 2000's.

But I digress... ;-)
 
It may be overkill but it's new to him, he wants to take reasonable measures (the total costs of those products cant be too much) and he wants to feel confident he can trust it for his road trip.

My only suggestion would be to consider changing the fuel filter after those back to back treatments (especially if it hasn't been changed before)
 
Originally Posted By: 95busa
If he wants to change the fuel filter he will be dropping the tank and pulling the fuel pump.


Your correct, I should have checked that application first before making the suggestion
 
Originally Posted By: 440Magnum
Any additive at all was probably overkill.

The 5.2 (318) is just about indestructible, but in "Magnum" form it does have one simple mechanical design weakness that can do a whole lot of insidious damage over time: the lower intake plenum gasket can fail, letting a lot of oil mist get sucked into the intake which (together with the lean condition on nearby cylinders) causes a lot of pre-ignition and detonation. If it pings a lot under moderate load and consumes a bit of oil, pull the intake and bulltproof the lower intake with a kit from Hughes Engines. I've seen these engines run 200k+ miles even with the severe detonation and mixture imbalance- that's how tough the rest of the engine is.



Well I've got a couple miles on 2 318 engines. I had an 89 ram with Holley tb fuel injection. The engine was still as strong as new at 500k when the front suspension went completely independent on me and sent the truck to the wrecker.
Then I had a 96 with the magnum 5.2. That truck had over 400k on it when I got t-boned so hard she flipped on me a couple times.
Between those 2 trucks I crossed Canada and the United States umpteen times,back and forth from wilberforce to collingwood a couple times a week and many pleasure cruises around Lake Superior.
The 318 was a great engine.
 
We had tons of Dodge vans in the late 70's through the early 80's. Nothing but fond memories of the 318 here.

Both it and the 360 were amazingly durable and cheap to repair/rebuild if needed.
 
First new vehicle that I bought was a '92 Dakota 4x4 w/ the 318. Ran it for 15 years w/o an issue. It got Mopar 10W-30 for probably 8 years or more. Then it got either green GC or Esso's XD3 0W-30 until I sold it. I still see the thing from time to time. It never consumed any oil. The EGR got 'snipped' once by a mechanic doing me a 'favour'...! Hah! I usually ran 89 octane fuel in it - probably a waste of money in hindsight. It went from one end of Canada to the other & the best mileage that I ever got w/ the thing was on that trip, ~25 MPG. I think it had something like 240 hp, can't recall the torque figure. It would spin the rear end clear at will.

It was a great first truck. Great engine.

John.
 
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