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I sent in the factory fill 0w-20 for UOA even though it was of dubious utility see https://bobistheoilguy.com/forums/threads/2022-mazda-miata-mx-5-factory-fill-0w-20-2-873-miles.364458/ , that UOA reported unusually high copper levels. Even though I knew logically the factory fill could show...

The utility of sampling the factory fill is debatable but I could not wait to get a peak, I have a short commute and I was concerned about water and fuel in this direct injection motor. The sample pull was a disaster I knocked over the first sample and had to catch the last drips from the pan...

I have a 2022 Mazda MX-5 on the way, this year for Mexico the recommended weight moved from 5w-30 to 10w-30 for temps of 0f and above, the US 0w-20 is not recommended. here in the high dessert we get 115f summers and by next winter I should have moved south to basically Mexico weather. Going to...

The Miata Manual transmission has what is often refereed to as a Shift turret, it is a nominally separate sump from the rest of the transmission the lower half of which is filled with GL4 gear oil same as the transmission, in this same chamber are two pivot balls that are coated with grease...

Backstory: we bought this 4x4 Toyota Sequoia SR5 almost 2 years ago with 194K miles, It was owned by a company that repaired x-ray machines, they drove it a lot but it appeared to only have a driver inside, interior was immaculate. and had no wear accept for the drivers seat and the very back...

I usually use Toyota filters but I was out, and did not want to wait for delivery so picked up a M1 filter from Wally World at about twice the price. I was putting fresh oil on the gasket and noticed the anti drain back valve had a pretty obvious cut in it, not having another filter on hand...

So I changed the oil in my 239K 1999 LS 400 in feb 2017, M1 EP 10w-30, drove my long commute for about a year and then had to park it in the yard spring of 2018 with 260K, because of brakes tires and starter issues (that starter was a pain to change) had a lot of time at home lately with this...

So I just picked up a 2016 Toyota Sequoia 4x4 with 197K miles (previous owner apparently drove a lot) we will be doing occasional heavy towing, I move a lot for work and tow a large enclosed trailer. the rest of the time its a grocery getter and kid hauler and the wife's primary vehicle...

Oil was Mobil1 high millage 10w-40, this would be the second 10K mile run with this oil, lead calmed back down to normal (for this motor) My 1FZ has never thrown the beautiful numbers this engine is capable of, no coolant (main reason for the analysis) I think Blackstone goofed on the...

5 months, August to January, 11K miles, Mobil one 10w-40 High millage. located in north Georgia and spend a lot of time on the freeway on my long commute In most metals this engine has shown an improvement since I got it from the previous owner. I would be pleased with this report except for...

Anyone have any home tests to positively identify this stuff and tell us once and for all what this crap is? For several years 93-97 Land cruiser owners have been finding a grey sludge in the cooling system, sometimes just a little sometimes a lot Here is a pic of one extreme case: there...

Anti wear additives Mobil 1 & ILSAC, API, Acea, EP/SS. As it is the oil I currently use I am trying to get a better grip on what is happening with the Mobil 1 line. I know a lot of this has been covered but not fully enough to answer my questions so please bear with me. It seams that we did...

Mobil 1 0w-40 I think it was SM but can’t remember for sure. Toyota 90915-20004 oil filter from my filter hoard, Previous owner had put in a K&N air filter witch was promptly replaced with OEM paper upon discovery not long after purchase and also not long before the first analyzed OCI was...

Mobil 1 10w-30/15w-50 mix, 6.3k miles, ‘96 Lexus LX450 ( Toyota Land Cruiser FZJ-80 ) 4.5L 1FZ-FE Went with a thinner mix for the winter (mild Georgia winter) , had 2 quarts of 15w-50 left over so put it in filled the rest (6 quarts) with 10w-30, top off oil was 10w-30. Should be close enough...

Pics are from a 4.0L I-6 (3FE) in a 1988 Land Cruiser (FJ-62) with at least 100k miles, I figure this is a good candidate for Arx but that is a lot of carbon, would this one need 2 or 3 treatments? Should the filter be changed mid cycle? (750 miles?) What else should we know about cleaning...

Mobil 1 15w-50 for 4K miles and 2 months, mild temperatures, no real cold starts and not to much hot driving, was a mix of 35 mile all highway commute (every third week as I started carpooling) and around town short trips the rest of the time, unlike the previous OCI no long trips, no notable...

Used vehicle purchased in February. This is the first UOA I have for this vehicle. Previous 2 owners gave it 106K of normal dino oil changes, I did 2 short OCI’s with chevron Delo 15w40 one 500 the other 1500 miles. Then a 3k OCI with Delvac 1, ( have sample, have not sent it in ) , and then...

I searched and surprisingly did not find any info on this I am installing a second battery soon. For now I am looking at using 2/0 cable for both the second battery and to replace the stock cables. Built for a 200A continuous draw, This truck will be off road witch puts a lot of humidity under...

my FZJ80 has a centrifugal pre-cleaner, after our pollen season I checked the catch pan and pulled out at least half a cup of pollen I don't know if it warrants replacement but maybe blow it out with compressed air in the reverse direction

I am looking for a valve to put inline that will ramin closed until a certain pressure is hit (aprox 40-50 psi?) something like the amsoil spring and ball arrangment except this will be for bypass oil only not total oil flow anyone know of a source for something like this? or who I could ask?