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Hello Everyone, Here is a UOA from a 2006 Nissan Sentra SE-R Spec V with 181k miles. Has 2.5 qr25de engine. Oil is Valvoline extended protection, 5w30 with 4k miles. No additives, for those wondering about the moly count. 12/6 is Valvoline maxlife full synthetic 5w30 api sp, 5/29 is valvoline...

Hi everyone, I've had some very thin, shiny, copper colored flakes in my engine oil for the past 50 or 60 thousand miles. Internet consensus from a quick google shows this might be from bearing wear (engine: 2006 QR25DE), and the engine is ready to explode at any time, but as mentioned before...

Hi Everyone, Is there any empirical evidence that upper cylinder lubricants perform their intended purpose? I'm not questioning their ability to improve cleaning power, but rather their claims to improve lubrication of the upper cylinder, help valves seat better, and improve MPG. I've tracked...

Hi all, ~169k miles on my 2006 Nissan Sentra SE-R Spec-V with 2.5 liter engine. Oil is Valvoline Maxlife Full Synthetic, API SP 5W30. 3.8k miles on oil. Lucas upper cylinder lubricant was used on most gas fillups on this oil run, I was curious to see the effects regular upper cylinder lubricant...

Hi all. Here is the oil report of my 2006 Nissan Sentra SE-R Spec V compared to its last oil report. The oil used in both reports is Valvoline 5w30 Full Synthetic with Max Life. Code OIL Valv5w30 Valv5w30 MILES IN USE 4.0K 4.5k MILES 134.1k 122.3k...

Hi everyone. I have a 2006 Nissan Sentra SE-R Spec-V with the 2.5L QR25-DE. It has 106k miles on the car, and 3500 miles on the oil. I used Valvoline Full Synthetic 5w-30, and added about a half of a quart with this run. Copper seems a little bit high, I wonder what that could be. Code: OIL...

Hi all, I'm stuck on which oil to use for my 2006 Nissan Sentra Spec V with the 6 speed RS6F51H transmission. I'm torn between the OEM Nissan fluid or redline 75w-85. Any input would be appreciated.

Hi all, I own a 1999 Mazda Miata. The owner's manual says to use 10w30 oil for most weather conditions. My question is, is there anything wrong with using a synthetic 0w30 oil? It has the same viscosity at operating temp as the 10w30, but lower viscosity @ 40C so wouldn't the 0w30 actually be...

Hey all, I've got two oil samples since I last posted here. The first sample was using unknown oil, possibly Pennzoil 5w20. The last two samples were using Valvoline Conventional 5w30. My prior sample seemed to have an issue with fuel dilution at 1.5%. This went away with the latest sample, as...

Howdy Yall! I'm the owner of a 1994 Toyota Camry V6 that currently has 88k miles. I've owned the vehicle since 69k miles. Sometime between 72k and 79k miles, the oil started to become contaminated with fuel, as is shown from UOA a while back. In addition, the dipstick smelled moderately of...

Code: Code: Sample Universal Averages OIL MILES IN USE 2.5k 4.9k MILES 71,900 SAMPLE TAKEN 01/07/13 MAKE ALUMINUM 2 3 CHROMIUM 0 0 IRON 4...

Hey all, I'm new to driving and auto maintenance. I recently purchased a 1994 Toyota Camry V6. It has 71k miles on it right now. I've got an oil change due soon. . what oil would best suit this car? I'm looking for maximum reliability sy I was looking at synthetics because they flow better when...