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I'm the second owner of a 2003 BMW 330i "ZHP" with the M54B30 engine. I have maintenance records all the way back to new. The OCI has never exceeded 10K miles or 1 year. I've just replaced the VANOS (variable valve timing), spark plugs, etc. and figured I'd share the look of the cams while...

I decided to do a UOA on my new to me 2003 E46 330i ZHP. I bought it from the original owner with an impeccable maintenance record. I was just curious to know if there were any issues that might need to be addressed, as these engines are known to blow head gaskets and drip fuel from injectors...

I think I know the answer but figure I’ll ask the braintrust of BITOG. I recently purchased a 2003 BMW 330i ZHP with the M54B30 engine enhanced with ZHP cams from the factory. I bought it from the original owner who has been meticulous about maintenance. Despite the age, and 153K+ miles on the...

It looks like my Carrera T is holding up well to track use. I've switched oils a few times (all Porsche A40 approved): 1) dealer-fill Mobil 1 0W40 2) self-fill Motul X-Cess 8100 5W40 3) self-fill Mobil 1 5W50 There are few miles on the engine, and my OCIs have been short due to track use, but...

The car is new to me and decided to replace the last dealer fill with Motul 8100 X-cess 5W-40. This UOA is for the dealer-fill Mobil 1 0W-40.

Hey all, My wife drives a 2016 Volvo XC90 with 75K miles on the odometer. It has been dealer serviced with 10K OCI using 5W-30 (Castrol as I have been told, I have never confirmed). Many XC90 owners cite oil consumption after about ~65K. Sure enough, we're seeing ours consume about 3/5 of a...

Blackstone likes this report, but I'm curious about the titanium. I'd love y'alls' input on this UOA.

Hey folks, I've got a 2020 3.6L Jeep Rubicon on order and will begin the stockpiling of oil because that's what us folks do. Chrysler changed the recommend weight from 5W-20 to 0W-20 for its 3.6L Pentastar engines. 5W-20 MS-6395 oils seem cheaper and easier to come by than 0W-20 MS-6395 do. On...

I know that oil anecdotes are a dime a dozen... "runs smoother" after switching oils is a laughable cliche, and rightly so. But I swear on anything that there is a real, true, noticeable, auditory difference between 5W20 Pennzoil Platinum and 5W20 Pennzoil Ultra Platinum in my 2016 Wrangler...

I suspect that the aluminum spike I saw last time was from 5 track sessions at COTA in 100F+ temperatures. I probably should have changed the oil right after, but moved across the country and didn't have the space or tools. I ultimately ended up doing another ~1500 miles on the track oil...

Hey gurus, I'd love your input on the UOA above. It took almost a year to rack up those 2083 miles. Shortly after the last change the change the Shelby saw 5 ~25 minute sessions at Circuit of the Americas where the ambient temperature peaked at over 100F.

So BITOG crew, this doesn't look too good. This is my new 2015 BMW 328d. The car sat unsold for a year but the dealer did change the oil (I have the records) shortly before I bought it. For good measure I replaced the engine air filter. Thoughts?

We just bought a new Volvo XC90 T6 with Volvo's Drive-E 2.0 4-cylinder turbo/supercharged engine. So far, the engine is a gem. Even Ward's thinks so and has added it to the is year's top-10 list. The issue of oil for the Drive-E seems a specific problem in the USA. The USA-spec user manual...

Hey all, My family has decided to get rid of the Porsche and the Lexus and replace both with a highly reliable and utilitarian family car. I want something I don't have to think about save for routine maintenance. We need something bigger than our current Jetta SportWagen and are considering...

Just curious to know which lab did the "Spicer Report" testing. I seem to recall that they're in San Antonio but have been able to find a reference. Any input is much appreciated.

I could elaborate a lot on this even more, but I'll try to keep it brief. Car: 2012 VW Jetta SportWagen with almost 20K Since the car was new, I've added 1 quart of B100 and ~5oz of Diesel Kleen to every fill-up, no exceptions. I'm well versed in the HPFP drama and this is my means of...

All, I've come across a Ford 289/302 that was bored .030" over about 10 years ago then thrown in non-climate controlled storage. The block is flash rusted everywhere, as are the rods. The hyper-eutectic pistons are fine as expected, but the rings are shot. I'd like to put this engine together...

All, To answer some of the questions that are floating around the internet related to diesel fuel additives, I've created the following survey: Diesel Lubricity Survey I'd much appreciate your participation and will share the results here.

This is the second UOA on my Lexus IS250. The first thread is here. I did change the air filter after the first UOA and it seems to have improved my silicon. Fuel dilution is also significantly better. Iron remains high, however. I'm wondering if 8XXX miles is simply too much for this oil? The...

Some of you might remember this thread about the ticking/sticking/clanging noise I was getting with my low-mile 2006 Porsche Cayman S. Per the recommendation of a reputable shop in my area, I'm running 0W-30 for the next thousand miles or so. For whatever reason, the 30 weight worked to...