First Oil Change
Professional
Joined: Dec 2003
Posts: 177
Likes: 1
From: United States
RE: First Oil Change
BadStratRT
that would actually be very interesting if someone WOULD send oil for an analysis...what kind of place could do that sort of thing?
that would actually be very interesting if someone WOULD send oil for an analysis...what kind of place could do that sort of thing?
B12Teuton
Oil analysis will tell you lots of things about chemical content and viscosity etc. Good info if you are talking about comparing new oil to 3,000 mile oil to 10,000 miles oil. But in the case of the first oil change, the area of greatest concern is the metal fragments
quote]B12Teuton
These would be hard to include accurately in a sample sent to a lab since they get hung up in filter, screens, magnetic drainplugs (if applicable) or crushed into moving engine parts like your main bearings. They obviously sink to the bottom of the sump/oil pan as soon as the engine stops. That's why they tell you to run the engine just before changing the oil. The oil gets warmer and thinner so it drains better, but also because a lot of the sediments are still in suspension and will get flushed out.
If any of you have ever had to clean off a magnetic oil drain plug after the first few hundred miles of driving, this would make more sense.
Oil analysis will tell you lots of things about chemical content and viscosity etc. Good info if you are talking about comparing new oil to 3,000 mile oil to 10,000 miles oil. But in the case of the first oil change, the area of greatest concern is the metal fragments
quote]B12Teuton
These would be hard to include accurately in a sample sent to a lab since they get hung up in filter, screens, magnetic drainplugs (if applicable) or crushed into moving engine parts like your main bearings. They obviously sink to the bottom of the sump/oil pan as soon as the engine stops. That's why they tell you to run the engine just before changing the oil. The oil gets warmer and thinner so it drains better, but also because a lot of the sediments are still in suspension and will get flushed out.
If any of you have ever had to clean off a magnetic oil drain plug after the first few hundred miles of driving, this would make more sense.
As matter of fact they can read the wear metals in parts per million using spectrographic analysis. It's done all the time. There are no large "chunks" or "fragments" but rather microscopic metal dust that is carried by your oil. "Chunks" of metal do not get crushed by your bearings. If these chunks were as big as you say they were, you would have catastrophic engine failure.
The reason you take the oil out after storage is because you didn't change it before you put the car away, which is when it should have been done rather than let it set with the acids in the oil.
You're kidding, right? Crank case breathers, oil vapor vents that go directly into the airbox, etc. There may be a filter in the way, but there is plenty of fresh air getting to the inside. When you pull your drain plug, does it gulp for air like pouring out of a soda bottle??? NO, because an air supply is wide open to the atmosphere!!
I'm not trying to be a jerk, but please!
I'm not trying to be a jerk, but please!
B12Teuton,
Spend some time on www.bobistheoilguy.com and enlighten yourself. Right now, your a poster boy for the "every 3000 mile oil change scam."
Using synthetic oil, I go one year between oil changes. I replace my oil filters at 6 months and change everything at 1 year. I accumulated over 16,000 miles in one year on my Dakota using the same oil. I also ran over 7000 miles / 1 year on my Ram's oil.