I recently got a 175k mile 5.7 Hemi Jeep Which im using offroad for moving stuff around. this means its randomly started for 2-10 minutes at a time. it rarely gets hot, it doesnt go above 10mph, just the worst conditions possible. i did the timing chain which was loose and slipped 1 tooth. this resulted in going from a minute of loud ticking on startup which i thought was the manifold, to the engine just being loud for about 7 seconds i assume due to a Lifter. i added Rislone to try and clean it, who knows if it will work. obviously the oil will be full of gas and moisture, im just going to do whats needed to make it last as long as possible before it blows up and then i replace it with a truck. should i just do a normal once a year full synthetic, or should i do it more often due to its current lifter issue? right now it has synthetic blend And the Rislone that went in with the chain replacement.
What Interval for a car that idles for 10 minutes a day?
- Thread starter Ang
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I did some idling on the trail for airing down/up my Jeep and got 1.6% fuel in my oil. That's all I did. Also some drives through Starbucks. In both cases my Jeep was fully warmed up. Your idling sounds a lot worse.
My viscosity dropped from 10.8 to 9.9.
My viscosity dropped from 10.8 to 9.9.
So it sounds like these engines fill the oil with fuel if idling? The hottest it will ever get is moving stuff around for 20 minutes at a time so it's the worst possible circumstances for the engine.
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I could guess, the car isn't going to tell me. It has gone up like 2 or 3 miles which seems like more than the car has moved but I would guess no more than 24 hours a year or 2 hours a month, probably less than that. But all of that is in startups of 2-10 minutes most of the time, so it will never have a chance to get close to hot. The exhaust already has rust come out with the water as I'm sure water sits in there. I think it has holes too.
What does the manual say the severe service interval is?
I’d do that.
I’d do that.
Agreed. Every 6k miles or 6 months according to the manual:
https://cdn.dealereprocess.org/cdn/servicemanuals/jeep/2010-grandcherokee.pdf
It really is that simple sometimes. Do severe service things, do the severe service interval.