15000 mile oil?

[corbinwaterski]

http://www.mobiloil.com/USA-English/.../Homepage.aspx
and
http://theoildrop.server101.com/cgi/ultimatebb.cgi?

[ZR800]

Know the Facts
AMSOIL Saves You Money!

AMSOIL extended drain intervals mean fewer oil changes, long term savings and convenience

Example:

Conventional motor oil companies recommend 3,000-mile drain intervals

Conventional 10W-30 Motor Oil
*(40 quarts needed for 25,000 miles) @ $1.50/qt. x 40 = $60.00
8 Standard Oil Filters @ $5.00 per filter x 8 = $40.00
TOTAL $100.00

AMSOIL recommends 25,000-mile/1-year drain intervals

AMSOIL 10W-30 Synthetic Motor Oil
*(6 quarts needed for 25,000 miles) @ $6.15/qt. x 6 = $36.90
2 AMSOIL Super Duty Oil Filters @ $10.00 per filter x 2 = $20.00
TOTAL $56.90

* Comparison based on 25,000 miles driven per year and 5-quart oil capacity, with one quart top-off for for filter change.

You save $43.10 per year using AMSOIL premium quality synthetic motor oil and oil filters. And at Preferred Customer prices, you save even more.

Even if you drive only 12,000 miles per year, the cost for AMSOIL is the same as you pay for petroleum oil now! But you still get better protection, lower engine temperatures, easier cold-weather starts and less engine wear. All of these benefits add up to an engine that will last longer and need fewer repairs. Change your oil and filter today and in six months change the filter again. That's it! What could be more convenient and good for your vehicle, too?

[twomorestrokes]

Originally Posted by ZR800

Know the Facts
AMSOIL Saves You Money!

Amsoil IS a great oil. That's all i used for injector oil back when I rode 2 stroke sleds. However, I would never go 25k with the same oil in my vehicle. Deposits are deposits, whether it remains slippery or not.

[ZR800]

Snowmobiling also turned me onto AMSOIL. I have had amazing results. 2 stroke motor oil normally gums up what they call power valves on snowmobiles. I have only had to clean mine once in 8000 miles. Most clean theirs once or twice a year, averaging 1500 miles per cleaning. Most would also consider 8000 miles on a snowmobile very high miles and a tired motor. There was a recall on my motor due to rod clips which required a top end rebuild 2 winters ago at approximately 4800 miles, and the mechanics were amazed at the condition of my cylinders, pistons, and rings. In addition, my sled stock will still run even out of the hole and top end with brand new sleds of the same size 800cc motor. I swear by AMSOIL.

[BlenderWizard]

Where can one buy Amsoil?

[ZR800]

WWW.AMSOIL.COM

[BlenderWizard]

Ok, I've read like 10 threads on theoildrop.com, and those guys REALLY talk in circles. Nobody ever makes a clear stand on anything. So, let me ask you guys: I am expecting my shipment of Royal Purple in a few days, but what oil should I use and how often should I change it if i want to get the longest life out of my engine? I drive normally, I do not go to the track, etc, etc.

[jethro_3]

THe trick with Amsoil or any other synthetic is to have a sample of the oil in your vehicle sent to a lab to check for contaminents, viscocity break down, and other peramiters. My co-worker is an Amsoil rep and he has 30K on the last change in a dodge diesel that is a farm truck. The last sample showed no problems and good for another 4K.

The idea is not to go forever, the idea is to use the oil until it shows breakdown and contaminents.

[Chevyman15004X4]

Im going to start never changing my oil. I will change the oil fliter out every 4-6 thousand miles and add whatever needs added and thats it. I know one person with a ford tuck that has 260 grand and ever since he owned it he has just changed the filter and added oil. I have seen and heard many people do this. Although I would use synthetic since I have read in many places petrolium based oils burn off and create carbon deposits and sludge real bad yet synthetic has very little burn off.

I want to expirement with this and see just how bad every one else is brain washed with the 3000 mile oil change. Besides, Nobody ever learned anything new by following everyone elses old ways. I feel as long as you change the oil filter, you are removing most of the dirt and metel deposits in the oil anyway. I have only 118k miles on mine but I have gone so far 12000 miles without changeing oil.

On the weight issue, I pick up 10w-40 most of the time just to be different. I live right above texas in the panhandle of oklahoma (Guymon) where it gets over 100 degrees with little to no humidity in the summer and sometimes below 0 degrees in the winter and I have not had any noise with my chevy truck with a 350, 84 ford van with a 302, suzuki sidekick with a 4 banger. ( I do change it in my lawnmower though since it has no oil filter)

[BlenderWizard]

Originally Posted by Chevyman15004X4

Im going to start never changing my oil. I will change the oil fliter out every 4-6 thousand miles and add whatever needs added and thats it. I know one person with a ford tuck that has 260 grand and ever since he owned it he has just changed the filter and added oil. I have seen and heard many people do this. Although I would use synthetic since I have read in many places petrolium based oils burn off and create carbon deposits and sludge real bad yet synthetic has very little burn off.

I want to expirement with this and see just how bad every one else is brain washed with the 3000 mile oil change. Besides, Nobody ever learned anything new by following everyone elses old ways. I feel as long as you change the oil filter, you are removing most of the dirt and metel deposits in the oil anyway. I have only 118k miles on mine but I have gone so far 12000 miles without changeing oil.

On the weight issue, I pick up 10w-40 most of the time just to be different. I live right above texas in the panhandle of oklahoma (Guymon) where it gets over 100 degrees with little to no humidity in the summer and sometimes below 0 degrees in the winter and I have not had any noise with my chevy truck with a 350, 84 ford van with a 302, suzuki sidekick with a 4 banger. ( I do change it in my lawnmower though since it has no oil filter)

Did you see me mention my dad's '84 Silverado 305 with ~700,000 miles on it? This is exactly what he did. He had a small oil leak, and every couple of weeks, he'd add a quart. He's got a '81 with a 305 and a slight oil leak, and it is fast on it'sway to doing the same thing. it currently has ~250,000 miles on it. He only changes his oil filter when the rubber seal on them goes so bad, it begins to leak around it. The first SBC's didn't even have an oil filter.

[broughy84]

here is why I change my oil every 5k

Lets say you have a very small intake leak or head gasket leak. If The oil doesn't get contaminated enough in 5k to notice then it doesn't hurt anything and you drain it and change it. If you go 20k, you have 4 times as much coolant in the oil. I don't know if you all follow what I am saying, but I do, I guess!

[twomorestrokes]

Lots of luch Chevyman! I'll leave the testing up to you. Keep us posted.

[jeep_cj4x4]

everyone else has said something so I guess I will too. I have an '01 silverado. I switched to syntec at 60k. I now have 87k and have just recently started noticing piston slap. (never knew what piston slap sounded like until now). I change my oil about 4k mile intervals.

Also, I know on my '01 and I'm sure some other years, the oil senser thing is set up to illuminate the message center "change oil" light when it registers a breakdown in the oil, excessive contaminates or 10k miles. Which ever comes first.

[jethro_3]

Talking with the tech at the Dealer, the Change Oil" light is produced by a formula according to how you drive. A sensor can not do the testing to check viscocity or other testing. When your light comes on take a sample and send it off to see what the oil really looks like. I bet you will not see a viscocity breakdown. Just my

[Rhymingmechanic]

From what I've read, the early Oil Life Monitor (like 2001) records things like temperature, rpm, and cold starts, but can't actually test the oil. Mine has come on as early as 3200 with a lot of short trips in cold weather. I changed at 6200 once with a lot of summer highway driving and the light had not come on yet. The OLM is calibrated for dino oil if that's what the truck came with, so the "change oil" mileage will be conservative if you've switched to synthetic.

Anybody considering a "no oil change" program might be interested in the test linked below. They wanted to see how long they could go without changing synthetic oils, and had a sample tested every 1000 miles. They changed filters when "insolubles"--the stuff the filter can't catch--got too high, and changed the oil when the anti-acid additives were almost gone.

http://neptune.spacebears.com/cars/s.../oil-life.html

Edit: The test used regular Mobil 1, not the new extended drain version.