Gas tank Cleaners, snake oil or something to it?
#32
Lexus Champion
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Toyota/Lexus has had the dual injection (direct+port injected) V6 engines since 2007 which prevents carbon buildup in the port intakes. That's more than a decade. How come the German luxury marques like BMW, who are hyped for being on the cutting edge of engine/powertrain technology, couldn't implement this decades old technology in their engines and thereby improve lifespan and ease maintenance issues of their engines?
#33
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The 2.5L 4GR-FSE(and for that matter the 3.0L 3GR-FSE) is direct injection only. It doesn't have the protective effect of added port injection found in the 3.5L 2GR-FSE and later engines.
#34
Lexus Champion
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Does dual injection automatically mean poorer fuel economy?
Those extra parts haven't adversely impacted the reliability of the 2GR-FSE/FXS/FKS dual injection V6s. In fact it's prolonged their working lifespan. Just because other parts of the car will have issues by 100K doesn't mean engine longevity issues shouldn't be addressed. Unless you're saying the German philosophy is planned obsolescence so they don't even try to engineer an engine to function beyond 100,000 miles.
Those extra parts haven't adversely impacted the reliability of the 2GR-FSE/FXS/FKS dual injection V6s. In fact it's prolonged their working lifespan. Just because other parts of the car will have issues by 100K doesn't mean engine longevity issues shouldn't be addressed. Unless you're saying the German philosophy is planned obsolescence so they don't even try to engineer an engine to function beyond 100,000 miles.
#35
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Yes, but these extra parts cost extra money making the engine more expensive to design and built, and to service when parts start to fail. Franky, I would not blame the manufacturers for the "panned obsolescence" as they need to meet stricker fuel economy and emission requirements mandated by governments worldwide. They have no choice by design these needlessly complex engines that run as efficient as possible when new, but they quickly deteriorate and lose their initial efficiency, and do not last as long as conventional engines. I dont know if there is an actualy net gain or net loss in emissions when you consider everything, but at least the obsolescence, whether planned or incidental, keeps the wheels of the economy turning.
you're right about keeping the wheels of the economy turning for these manufacturers, but when lexus was competitive, it had no problem gathering new customers and retaining its existing customer base.
#36
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that's both good to know and also sad to hear. to have planned obsolescence so firmly in place that a bmw engine cannot last more than 100k miles without major servicing is a bummer if it were to really love the car and want to keep it. now, i don't see that happening with this car, but hypothetically...
#37
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Well, 100k miles is also about 10 years time for an average driver. It is a long time, during which all kinds of things happen, including getting older - both you and the car. Unless its some sort of collectable, dont even worry about any long term plans when it comes to the car.
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#39
Lexus Fanatic
#41
Lexus Fanatic
#42
Lexus Champion
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Otherwise it's pointless. Gas is a very good cleaner and tier 1 is exceptional at keeping DI injectors totally happy.
#43
Lexus Champion
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I wouldn’t worry so much about the “top tier” gas thing. That’s a marketing thing that suppliers buy into. There are plenty of gas providers I wouldn’t be concerned about getting fuel from that are not TopTier. Would I buy it from the weird ancient no name company with the pumps from 1992? No lol.
#44
Lexus Champion
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I'd be more worried about the condition of the gas station and pump equipment than top tier vs generic brand gasoline. If the gas station has old pumps, chances are the inground tanks are old and full of residue, and the filtering system is compromised. You don't want to be pumping dirt into your tank.
Also, if you want to be extra**** thorough, find out when the tanker arrives to refill the tanks at your gas station, and fill up when the tanks are full so the pumps are not sucking any dirt from the bottom of the tanks, but also at least a couple of hours after these tanks were refilled so all the stirred up dirt had time to settle.
Also, if you want to be extra
#45
Lexus Champion
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that's both good to know and also sad to hear. to have planned obsolescence so firmly in place that a bmw engine cannot last more than 100k miles without major servicing is a bummer if it were to really love the car and want to keep it. now, i don't see that happening with this car, but hypothetically...
Best examples can give are the PCV systems in Audi and BMW and the vacuum pumps, they are very perfectly sealed and use a pump to actively draw vapor out and to power the brakes in some cars (the valvetronic system and variable runners can lead to situations where a non-electromechanical brake booster has no consist vacuum supply) but if the pump fails or their is even a small break in the sealing the rings will begin to massively burn oil from crankcase pressure.
Another example is valve stem seals/guides in N62/3 engines, they are "perfectly" sized and clearances to allow as low as possible can mounting so overall engine exterior dimensions are low. However they fail very consistently because in reality they are simply too small and tight to avoid wear in non-laboratory conditions.
Sorry, I've had to deal with so many BMWs I've seen all the common failures firsthand