Its a 2nd Gen Mazda 5 with 113k. It uses the most expensive NGK sparks, Iridium Laser. I changed them. I use Mobil1 and also posted a Oil analysis an year ago. [image] Did an oil analysis on my Mazda Maintenance/Repairs I did the Blackstone oil test after 5k and 18months …

[image] sciconf: I can take photos. Do u want me to post here? Well, I don’t really care… LOL. But yes, if you post pic(s) here, then everyone can look at what you’re talking about and perhaps say whether they think anything bad is going on.

[image] jtsanders: . Have you considered checking the plugs at 50,000 miles and gapping them accordingly? Are you sure it is possible to modify the gap? Some newer tech plugs can’t be gapped w/o risking breaking the electrode. -

Don’t check the plugs mid interval. The reason is that new plugs come with an anti-seize plating on them. They can go hundreds of thousands of miles without seizing. However if you remove the plug, you scrapes some of that plating off and it could seize shortly after reinserting them. You can us…

[image] cigroller: As the oil analyzers said, the color of the oil is not that meaningful. Anyone remember the Graphite oil from Arco? t was black right out of the can.

Sure do. I used it in my car for about a year. I can’t remember what made me smarten up and stop. I vaguely recall I began hearing horror stories about it.

Did an oil analysis on my Mazda noticed significant engine braking on a freeway so Did you find out why your transmission is doing this? There should be little engine braking unless you manually downshift.

Hmm, my domestics do not. I have to downshift at least two gears to feel the engine braking, will see less than 500 RPM increase on the tach. I rarely do it, if light traffic, I will just let off the gas earlier. Heavier traffic just use brakes on the exit ramp.

Either way, I can’t see engine braking as a sign one needs an oil change.

To be fair, I use ECT PWR mode almost 100% of the time now, which raises the shift points and slows down the stupid gear hunting the 3rd gen Tacoma’s are known for, but in raising the RPM range of the up/down shifts you do tend to feel the engine braking much more then in reg mode… My MPG seems to b…

Sparks, Carbon......100k!

Maintenance/Repairs

Purebred December 17, 2024, 1:27pm 17

Did you find out why your transmission is doing this? There should be little engine braking unless you manually downshift.

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Sparks, Carbon......100k!

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