Absolutely always use mazda filter and the owners manual says use Castrol which the three local Mazda dealers use this I also go with it. Over 60k miles with oil changes anywhere between 3k-6k and still runs great.
Owner reviews for engine oil
Honestly I wouldn't have the guts to run it for that long. I run Pennzoil full synthetic with a Purolator boss filter and I still do changes every 5000 miles.
Been using this is 5w30 on my chevy cruze foe the past 200k miles and changing every 10-15k miles. Great oil .
I once used the 20k mile oil, but changed it at 12k; my engine seemed to run nore smoothly, after that. I swore off longer oil change intervals and went back to regular Mobil 1.
It is good oil! The only recommendation for C5 Corvette's and other cars.
I have been using AMSoil for years and did the once a year/25k miles oil change for years and and my engines have had zero issues.
Ran it for a few years in my 02 ALH with no issues.. supplied by my local VW certified (but not VW themselves) mechanics shop.
Have used Mobil 1 European formula 0w-40 and liquimoly molygen 5w-40 in my 2019 golf r without any issues. Molygen holds up great to the fuel shearing from ethanol I run.
Pennzoil platinum high mileage full synthetic 5w-30. I work at a Toyota dealership and this is what we use and is recommended. It's flows well and has great wear protection. I used to use mobil 1 but this stuff is 10x better. If you do a little research it shows this stuff performs/flows better then most oils.
May get hate but I use in both of my is300s Shell Rotella T4 Triple Protection SAE 15W-40 Engine Oil the first oil change is nasty cause it has more detergent but after that you have much cleaner oil changes from that point forward.
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