- Joined
- Sep 28, 2002
- Messages
- 39,798
Originally Posted By: caprice_2nv
Personally I disagree with the proactive routine. If your changing the oil often enough it will not sludge up, so there is absolutely no reason to add auto RX or any kind of cleaning product.
I had to change the worn out valve seals in my 87 305 Chevy engine with almost 200k miles on it (was running hot until I changed the rad, so the heat probably cooked the valve seals prematurely). Anyways when I pulled the valve covers off it looked like brand new underneath. I changed the oil every 3k miles and had switched to synthetic some time after I had it for a while.
I've seen a few other engines that were spotless under the valve covers with somewhat regular oil changes.
Now I would have no problem with trying auto rx for an engine that had been neglected before I got it, or had oil consumption issues but not in one that I know was taken care of.
Do a search on dnewton3's user name in this forum. Spotless 3.0 Vulcan ..with two low cylinders on compression. It was the location of a freeze plug failure and an overheat (between the cylinders).
Ring coking can occur regardless of visible deposit formation. While I won't do an Auto-Rx treatment every 25k, like Rich20, the maintenance dose is something I would probably do if I was someone who wanted to assure in its prevention. I do too many experiments where I need to isolate the oil being tested for longevity (or whatever). On the extended fleet (kids and their SO's) I have a couple that I add it to the sump at the maintenance dose rate (already treated).
I did my first Auto-rx treatment on both jeeps just recently. They have 147k and 75k on them.
Personally I disagree with the proactive routine. If your changing the oil often enough it will not sludge up, so there is absolutely no reason to add auto RX or any kind of cleaning product.
I had to change the worn out valve seals in my 87 305 Chevy engine with almost 200k miles on it (was running hot until I changed the rad, so the heat probably cooked the valve seals prematurely). Anyways when I pulled the valve covers off it looked like brand new underneath. I changed the oil every 3k miles and had switched to synthetic some time after I had it for a while.
I've seen a few other engines that were spotless under the valve covers with somewhat regular oil changes.
Now I would have no problem with trying auto rx for an engine that had been neglected before I got it, or had oil consumption issues but not in one that I know was taken care of.
Do a search on dnewton3's user name in this forum. Spotless 3.0 Vulcan ..with two low cylinders on compression. It was the location of a freeze plug failure and an overheat (between the cylinders).
Ring coking can occur regardless of visible deposit formation. While I won't do an Auto-Rx treatment every 25k, like Rich20, the maintenance dose is something I would probably do if I was someone who wanted to assure in its prevention. I do too many experiments where I need to isolate the oil being tested for longevity (or whatever). On the extended fleet (kids and their SO's) I have a couple that I add it to the sump at the maintenance dose rate (already treated).
I did my first Auto-rx treatment on both jeeps just recently. They have 147k and 75k on them.
