Interesting Oil Change

[patrickt]

Ain't that the truth, and everybody knows that aged engine oils provide lower friction and much improved wear protection capability over that of new oil. See: The Effect of Oil Drain Interval on Valvetrain Friction and Wear

[RodKnock]

Trying to justify your laziness?

[patrickt]

Originally Posted by RodKnock

Trying to justify your laziness?

Of course not. I'm simply providing a benevolent service to others, out of the goodness of my heart.

[RodKnock]

Originally Posted by patrickt

Of course not. I'm simply providing a benevolent service to others, out of the goodness of my heart.

Speaking of tests, I had my "Body Composition Test" yesterday. I'd say it's a bit more important than testing your engine oil.

[patrickt]

Originally Posted by RodKnock

Speaking of tests, I had my "Body Composition Test" yesterday. I'd say it's a bit more important than testing your engine oil.

Yep, most of the guys around here will be long dead before there's any appreciable wear on their Cobra engines anyway -- regardless of the oil they use or the interval in which they change it

That said, a UOA is pretty handy to red flag obvious problems that will eventually lead to a very bad day. They have little vacuum pumps and surgical tubes, that you fit down your dipstick hole, to make it extra easy to get a sample, for those that are interested.

[DanEC]

Originally Posted by patrickt

That said, a UOA is pretty handy to red flag obvious problems that will eventually lead to a very bad day. They have little vacuum pumps and surgical tubes, that you fit down your dipstick hole, to make it extra easy to get a sample, for those that are interested.

Are we still talking engine maintenance or now off to body health testing? Sounds a little too much like my digestive health doctor's lingo.

[patrickt]

Originally Posted by DanEC

Are we still talking engine maintenance or now off to body health testing? Sounds a little too much like my digestive health doctor's lingo.

Do any of the newer cars actually monitor the condition of the oil or do they just apply computer generated algorithms based on mileage, time, and driving conditions?

[Tim7139]

Some of them apply new technology to the issue. Some time ago Porsche went to a two filter system, a regular size for the pressure side of the dry sump system and a larger one on the scavenge side. 15,000 or 1/year oil changes.

[RodKnock]

Originally Posted by DanEC

Are we still talking engine maintenance or now off to body health testing? Sounds a little too much like my digestive health doctor's lingo.

Since my Kirkham is just about as light as it can get, I thought I'd get a Body Composition Test in an effort to further reduce the weight of my Kirkham, with the driver's weight included.

So, the average male has 25-30% of their body weight in fat, which means, if you're roughly 200 lbs, you have about 50-60 lbs of fat. Now, "essential fat" is about 10%, which means, most men need to lose about 30-40 lbs of fat.

Therefore, schedule you're next oil change and oil sample analysis at the same time as your Body Composition Test. Takes about 15 minutes each. Not only will you be healthier, but more importantly, your Cobras will be lighter and faster.

[patrickt]

Originally Posted by Tim7139

Some of them apply new technology to the issue. Some time ago Porsche went to a two filter system, a regular size for the pressure side of the dry sump system and a larger one on the scavenge side. 15,000 or 1/year oil changes.

If they have a gizmo built in to the engine that actually measures the level of contaminants then why do they continue to include the "or one year" language? If I have the oil changed in my Porsche, and then park it in my climate controlled garage, and don't even turn the key on it for a year, it's absolutely ridiculous to change the oil in it unless something is leaking in to the oil reserve itself.

[Gaz64]

Originally Posted by patrickt

Do any of the newer cars actually monitor the condition of the oil or do they just apply computer generated algorithms based on mileage, time, and driving conditions?

Every car that I see with an "oil life reset" that needs to be performed at a service would be an ECM programmed function.

[Joe's Garage]

I tried to read through this thread but couldn't do it. So if this has already been said then excuse the repeat. The ONLY explanation for getting 1/2 qt more oil on an engine drain when cold vs. hot is that "extra" 1/2 qt is what would normally be held in the engine from circulation and wetting all oil quenched surfaces. Let it sit and cool down, then that oil drains back to the oil pan.