My 1983 Chevrolet El Camino with a 305 V-8 made it too 343,000 miles without Auto-Rx. Here is a history of the oil's I used when I bought the car with 25,000 miles:
1) 25,000 too 200,000 miles Mobil 1 Synthetic
2) 200,000 miles too 343,000 miles Amsoil Synthetic
I should also note that I changed the oil and oil filter every 3000 miles.
This is what I did at 340,000 miles:
1) I changed the intake manifold and it was spotless in the lifter valley area.
2) I changed the oil pump
When we went to prime the oil pump it took a long time to build up pressure, my buddy said you have some junk in the engine. When we took the oil pan off to get to the oil pump everything looked clean inside.
3) Took the valve covers off and changed the rocker arms and pushrods since 1 of the pushrods was badly worn and just barely touching the rocker arm. With the valve covers off the valvetrain looked clean.
From 25,000 miles until 343,000 miles this car had synthetic oil in it, so for 318,000 miles it had synthetic oil and not dino oil, this is what the car did:
1) Leaked Oil
2) Lifter noise or we can call it a lifter tick
3) Blew smoke on startup
4) Consuming some oil
I did Auto-Rx and these problems went away. It is obvious that:
1) The rings were packed with some crud
2) Maybe some hardened valve seals
3) Oil passages were clogged somewhat
I cannot tell you how much oil I added over the years before Auto-Rx.
The truth is, yes you can make it too 200,000 or 300,000 without Auto-Rx, but I can say that this engine now runs better at 364,000 miles than it ever did before.
Before Auto-Rx it was sluggish until it warmed up, now when I start out it has power like it is warmed up.
Before Auto-Rx my Dad drove the car and said get a new car or a new engine, after Auto-Rx he drove the car and thought I put a new engine in.
It is important to realize that junk in your engine builds up over time and miles. I was using Mobil 1 starting back in 1985 when the majority of the people were using dino oil and I then went to Amsoil synthetic, this engine should not have had any junk in it at 343,000 miles.
I should also point out that the person I bought the car from showed me receipts from the dealer that he had his oil changed every 3000 miles.
If you use Auto-Rx you will have that new engine feeling for a very long time. Frank promised me my engine would run better and he has not lied too me.
1) 25,000 too 200,000 miles Mobil 1 Synthetic
2) 200,000 miles too 343,000 miles Amsoil Synthetic
I should also note that I changed the oil and oil filter every 3000 miles.
This is what I did at 340,000 miles:
1) I changed the intake manifold and it was spotless in the lifter valley area.
2) I changed the oil pump
When we went to prime the oil pump it took a long time to build up pressure, my buddy said you have some junk in the engine. When we took the oil pan off to get to the oil pump everything looked clean inside.
3) Took the valve covers off and changed the rocker arms and pushrods since 1 of the pushrods was badly worn and just barely touching the rocker arm. With the valve covers off the valvetrain looked clean.
From 25,000 miles until 343,000 miles this car had synthetic oil in it, so for 318,000 miles it had synthetic oil and not dino oil, this is what the car did:
1) Leaked Oil
2) Lifter noise or we can call it a lifter tick
3) Blew smoke on startup
4) Consuming some oil
I did Auto-Rx and these problems went away. It is obvious that:
1) The rings were packed with some crud
2) Maybe some hardened valve seals
3) Oil passages were clogged somewhat
I cannot tell you how much oil I added over the years before Auto-Rx.
The truth is, yes you can make it too 200,000 or 300,000 without Auto-Rx, but I can say that this engine now runs better at 364,000 miles than it ever did before.
Before Auto-Rx it was sluggish until it warmed up, now when I start out it has power like it is warmed up.
Before Auto-Rx my Dad drove the car and said get a new car or a new engine, after Auto-Rx he drove the car and thought I put a new engine in.
It is important to realize that junk in your engine builds up over time and miles. I was using Mobil 1 starting back in 1985 when the majority of the people were using dino oil and I then went to Amsoil synthetic, this engine should not have had any junk in it at 343,000 miles.
I should also point out that the person I bought the car from showed me receipts from the dealer that he had his oil changed every 3000 miles.
If you use Auto-Rx you will have that new engine feeling for a very long time. Frank promised me my engine would run better and he has not lied too me.
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