Oil Breathers

[MrTube]

Originally Posted by Brianfrench65

I too have added the road draft tube. Believe it or not, a tight engine releases fumes when driving along. This accessory was well worth it to me.

All engines have some blow by by nature, the steel rings with gaps aren't air tight.

I'm surprised at how many seem to think a new "properly run in" engine has no blow by.

They also all use some oil, though a good one will use very little. My two GM 1.4 turbos use less than I can detect on the stick in 10,000 miles but I'm sure they use some. They must or the compression rings wouldn't be lubricated.

[Tom Wesenberg]

Originally Posted by MrTube

All engines have some blow by by nature, the steel rings with gaps aren't air tight.

I'm surprised at how many seem to think a new "properly run in" engine has no blow by.

They also all use some oil, though a good one will use very little. My two GM 1.4 turbos use less than I can detect on the stick in 10,000 miles but I'm sure they use some. They must or the compression rings wouldn't be lubricated.

I agree with what you say.

Are you also saying you put 10,000 miles or more on an oil change?

[MrTube]

Originally Posted by Tom Wesenberg

I agree with what you say.

Are you also saying you put 10,000 miles or more on an oil change?

Yep. 9,000 to 10,000 depending on conditions.

Going by the car's oil life system and running Mobil 1 extended performance though, the computer doesn't know that but it makes me feel better. The computer assumes it's GM's synthetic blend.

99% highway miles, no short trips.

On the "A" we don't see near that mileage though I am about to do a change on it using Mobil 1 0w40. It's lucky if it get's 100 miles on it's oil.