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Apr 29, 2019, 329, 980 miles - Added a mix of 2 qts 5W30 and 4.5 qts 10W30 for this fill, primarily just to use up some oil laying about the garage. Dec 5, 2019, 334,716 miles - added 1/2 qt 10W30. Jan 26, 2020, 335,614 miles - added 1/2 qt 5W30 PP HM. Jul 25, 2020, 338,022 miles - Oil change...

Any oil is good in this 4.7 V8. I'm at about 7,500 miles and 13 months into my current fill... might be due for a change soon.

You are not running that 4.7 enough, 80K in 13 years? The wheels will fall off before the engine gives up.

Originally Posted by wemay After looking at chinee's uoa again, I wouldn't worry about the Flash Point as much as I'd herald the low wear numbers. But I can understand some other's' concerns. I agree, the wear numbers are low, but I would have really liked to go 10-12K between changes. Back in...

Keep going guys... it's been a while since I've truly followed this board, so this stuff is new to me and invaluable to learn. And of course I have to figure out how to ring as much life out of this engine, especially if I decide to keep it around as long as I do my other vehicles.

Originally Posted by buster Quote This fill was a Pennzoil Platinum mix, 2.5 qts of 5W30 and 1.25 qts of 0W20, an attempt to use a slightly "thicker" oil to compensate for the anticipated fuel dilution. I used to agree with that philosophy, but I don't anymore. Ask Gokhan has stated, the...

Originally Posted by ad244 Wow, Low flash point Originally Posted by Matagonka I bet fuel dilution is higher than they're saying. Look at your viscosity, you're losing it. You know, I saw these numbers and thought "This can't be good..." Originally Posted by Rand fyi blackstone routinely...

The recommended oil is 0W20. The first change I did with 5W30 was a knee-jerk reaction after reading about the fuel dilution issues with this engine, thinking a heavier oil would compensate for the fuel dilution (I think I read that somewhere). With the 2nd oil change, I took the 5W30 I had...

2017 Civic with 24,000 on the odometer, OCI 4,786 miles over 5 months. Oil capacity is 3.7 qts, which is exactly the amount drained, that plus a small amount in the filter and sent to sample, makes for a very small increase in oil level (due to fuel dilution). This fill was a Pennzoil...

wemay... don't think I want to move so far up to a 10W30 grade oil.. don't even know what HTHS is... will be doing a little reading when I find some time. But the Cocoa comment threw me off for about half a minute... until I realized October is right 'round de corner. When you see meh... remind...

dave1251... not ignoring the data... I just don't know any better. Been changing my oil for the last 30 years and this is by far the thinnest drain I have ever seen. Like I said above, no scientific reason for wanting to make a change... just an amateur feeling uneasy about reported issues with...

Given how extremely thin and water-like the oil was at this drain, I would really like to change it up. No scientific reason, but I am a bit uncomfortable with how thin that oil was at 3.7K. I like PP because I've gotten extremely good results in my Sequoia, and decent results in my Infiniti...

I did leave out the typical usage from my post... This is my daughter's car, typical use is a mix of both short and long trips in Tampa, FL. College is very close but she does make a 40 minute, 25 mile commute twice weekly to drop her cousin from school to home, twice monthly 125 mile round trip...

First UOA on this engine. Changed the oil at 7K, 12K, 15.5K and now at 19,344 miles That's OCIs of 7K, 5K, 3.5K and 3.7K December 2018, at the 12K change, I thought the oil had an overpowering gas odor. Did some research and found out about the fuel dilution issue with these engines. March...

Oh... one more weak point I've been living with since 2013... there's a small leak in the passenger side exhaust manifold, resulting in an uneven idle and reduced acceleration, but which usually goes away when warmed up. I've had a replacement manifold in the garage since ‘13 but never can...

My intention was not to experiment but rather try to solve the intermittent stuttering issue I had. The dealer had no clue so I was trying everything electrical I could think of... ended up being the driver's side throttle position sensor or acc. Pedal position sensor... can't recall the exact...

Weak points... interior door handle/latches replaced, rear hatch latch replaced once. Rear hatch window was problematic rolling down, and was an intermittent problem, until I found a solution on the web, now it works perfect all the time. My driver's side mirror just stopped working Monday, can...

Originally Posted by krismoriah72 ....or can inject some lively conversation into these results... I would like to hear the tale of ownership in your 300K.. repairs? mpg? weak points? timing belts? I am considering one of these as a replacement for my 2003 Suburban. This truck has been good...

Originally Posted by fortesquieu Question: When you add more "new" oil to the engine, and then do an UOA, doesn't that mess with the results? Thanks for your answers. Used about 1 qt of oil, but none was added. When I changed the oil, about 5.25 of the original 6.5 qts was left. Looking back...

Originally Posted by 1978elcamino How many timing belts have been dont on this vehicle? 3. At 100K, 199K and 280K.