Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
What do you guys think? Is it really feasible to think that with modern synthetic oil one could go 15,000 miles between oil changes?
I’ve already decided what my thoughts are on this topic, but I’d like to hear what you guys think. Btw not that it matters, because I don’t use synthetic oil anyways.. But I’m still 1 of those people who changes the oil every 3,000 miles. Always have to maybe it’s just a habit I feel good with.
Eh I go to the dealership for my oil changes. Mazda charges me 80 dollars after tax for synthetic oil change with the high moly 0W20 they use with the mazda skyactiv engines. I casually threaten a lawsuit over them washing my car and then go sit in one of the new SUVs and browse this forum while I wait lol
I go around the 8000km mark (sorry rest of the forum, I don't understand miles, might be cause we didn't shoot our way to independence?:shrug
The way I see it, I follow manufacturer recommendations. If any issues needs to be warrantied, I'll have a letter from my lawyer asking for the warranty.
(sorry rest of the forum, I don't understand miles, might be cause we didn't shoot our way to independence?:shrug
![]()
I would argue against that one (Manufacturer recommending what's best for the engine). As it was explained to me back when I was at a dealer training class (regarding other manufacturers maintenance plans at the time). You have to remember that each oil change counts against the car's total carbon footprint (and maintenance costs). If each car gets one less oil change under warranty, that's (let's say) 7 quarts less of oil that counts against their numbers. Multiplied by however many cars, you can see how much better they look when you trim that out. Keep in mind also that their goal is to get the car through the warranty period. I think of BMW less as "Brought My Wallet" (though it's that too...); I'll play Mike Phillips here and quote myself, since I haven't seen other people using the phrase - it's more like: "Barely Made Warranty". The majority of the repairs we're doing are on cars with 60k-120k. Unless manufacturers have a powertrain warranty past 50k, I find it hard to believe their focus is 200,000 mile longevity. Their focus is power to weight and fuel economy, and however they have to get there. Hence the increasing use of Zero W Thin oils.
This is all just my opinion from what I see with the cars I work on every day. I will happily admit I know nothing about how asian or domestic cars tolerate different oils/filters/intervals. I'm no engineer, so I can't say how the various additives or binders or modifiers in oil come into play at various mileages, I can just tell you - the cars of owners that follow lower intervals have less big issues than those that don't.
I'm replying on my work computer - later I'll try and dig out pictures of the inside of an X3 that was dealer serviced and followed the service light to the letter. Then another picture of a similar year/mileage 335i that did about every 5k with the same oil.
My Toro lawnmower claims the oil never needs to be changed but I change it once a year. I want the thing to last.
remember 1000 mile oil changes, then 2000 mile oil changes then 3000 , 5000, 7500, 10,000 oil changes someday we may never have to change oil.
The transmission fluid in my Lexus is supposed to be "lifetime". In order to change it, requires serious gymnastics, a colostomy bag with a hanger, and I think you have to have a permission slip signed by two dead people. I've watched videos of people doing it, but I haven't gotten brave enough to try. But at over 100k miles, I'm getting close.
It's the same with my FJ Cruiser, but I knew the previous owner had towed a caravan with it, and was a smoker, but that's a different matter. So I took it to a transmission guy I trust, with 130000 km on it he recommended a basic service at least, but I opted for the major service, after he showed me the old fluid, black, nasty and original, so about 5 years old, but no metal shavings in it. I also opted for the better of the 2 fluids he had available for mine. All up close to $500, but peace of mind is worth it. He also said, no transmission should be considered "sealed for life".The transmission fluid in my Lexus is supposed to be "lifetime". In order to change it, requires serious gymnastics, a colostomy bag with a hanger, and I think you have to have a permission slip signed by two dead people. I've watched videos of people doing it, but I haven't gotten brave enough to try. But at over 100k miles, I'm getting close.