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Not likely the fuel in my area... just checked the UOAs on the other 2 cars in the household and there's no Mn. But we all frequent different gas stations, so the oddity and possibility of the Mn in the fuel remains. I did change the PCV and spark plugs on 8/20/24, 2 days before the Mn...

No, I do not use fuel additives, but I do add Chevron fuel system cleaner from time to time. Could that be the source of the Mn? Odd that it's only appeared in the last 3 UOAs. And yes, I do have a preference for Pennzoil, it worked well in my old Sequioa in the 2000's before I switched to...

Changed the oil a little early this time around, meant to go 9K but was under the car changing the CVT fluid so did both at the same time. Driving habits typically do not involve short trips which helps minimize (so the boards say) the fuel dilution issue with these engines. Whether I use Euro...

Really interested but to hard to read that report...

Torn between Boxster and Cayman? Absolutely! My preference was Cayman, but now that I have the soft top, I believe it's the one to have, it just feels a little more special. I don't expect to have the top down much during these scorching summer days, but winter is going to be fun! Watch...

If you insist. It doesn't take much for me to take pics of this new-to-me beaut! :) 🚘

Thanks! Having fun with my full-blown midlife crisis! :cool:

5 weeks ago, I picked up this 2015 Boxster Base with the 2.7L Flat 6, 33,429 miles on the odometer. Carfax reflects the most recent oil change at 31,745 on 03/29/2024... 14 months and 1,820 miles ago. Here's the UOA on that oil. I will say that I forgot to pull a sample during mid drain and...

UOAs are akin to a hobby for me. I'm not truly looking to lengthen my OCIs but to confirm that my choices are not harmful. Is there "waste" here? Likely, but I don't have any costly vices, so if I spring for 5-6 UOAs annually (4 cars in the household), it's money well spent in my mind. And on...

I had a Sequioa in the past and I was good with 8-10K OCIs. Sold that truck with 340K and the best working part of that truck was the engine! So... I'm good with 10K OCIs and the UOAs support that. I do plan on 5-7K oCIs for the other rides in the household though. I am not the driver of...

For the ODI @ 28K, I used a K&N oil filter and a Fram for the next fill. Now I use OEM oil and air filters. That reminds me... I need to check to see when I last replaced the air and cabin filters. Well that's not good... it was never. Guess I know what I'll be doing today. Although I can...

As the UOA reflects, there was a touch of PP 5W30 in that fill. Replaced with PUP 5W20... no mixing grades this time around. UOA looks good... I guess I will keep doing what I've been doing.

Regular Top Tier fuel only.

That is odd. There is some information I left out concerning this oil change... 97,957... took an oil sample through the dipstick tube and sent for analysis. it's the prior UOA on the chart. 98,475... I tried performing an intake valve cleaning by spraying almost an entire can of CRC GDI IVD...

I would agree. I was thinking of switching to a high mileage blend, but if it broke... so the yellow bottle will continue to decorate my garage for the foreseeable future.

Either the Mobil 1-110A or the Purolator 14610.

This has been the highest interval between oil changes with this car and the UOA still is pretty uneventful, except for the slight uptick in Fe. Replaced with 5W30 Euro L once more, which is likely to be the final use of Euro L, only because I've run out. I use either PP or PUP 5W20 in my...

CarlB is correct, a shorter OCI will have no effect on the reported engine issues. Although there's been a class action lawsuit filed a couple of months ago, a search for the RTV problem in this engine yields only a handful of videos, and IIRC, only one or two where there seemed to be excessive...

I have read about the RTV issue and watched a few videos, read a few threads about owners removing the oil pan to search for RTV in the pickup and such. Most of the time very little was found. I'm not saying the issue does not exist but simply hoping it affects very few cars, and not mine. 🤞

Not intentionally. This is my son’s car and he’s in college. I wanted to maintain 5k OCIs for another fill or two, but he’s been coming home for visits less this year, and life gets busy, we all know how it can be. But this 8k or 12 months seems like a good interval to stick with.