Originally Posted By: demarpaint
Ford, Honda, Toyota, and Chrysler all have to warranty their engines. Big gamble if the oil is in fact inferior, in fact they'd probably be out of business by now with warranty claims because 20 grade oil has been use for quite a while now.
Not "inferior", but a grade according to a Ford powertrain engineer - that was never rumored to be disgruntled but rather left for a high paying job in NASCAR - lead to higher wear observed in post OEM durability testing tear downs. Not a UOA, but actual comparative tear downs. Also note the he didn't mention GRENADED engines on 5W-20, simply more wear.
Does a manufacturer who was hounded by environmentalists in the late 90s-early 2000s (over the Excursion aka "Valdez") sacrificing potential engine life beyond 150K for god only knows how much of a CO2 reduction over all of the 5W-20 rec'd vehicles produced and sold over that last 10 years and potential CAFE credits really shock you? Really?
Of note, OEM durability tests are equivalent to ~150,000 miles.
Quote:
Police are using it in CV Cruisers all over the USA, we would have heard of police cars blowing up by the hundreds by now. Also not to beat a dead horse, if the application calls for a "thicker" oil, they do recommend it as well.
And how are we supposed to hear about it? Most police agencies that toast an engine attribute it to extreme use or a hot shoe officer and rarely investigate the cause, they simply use their hook up at the local dealer to get a reman'd long-block to put the car back on the streets as quick as possible. How do we know a police cruiser that blew its engine at 150,000 miles wouldn't have gone 250,000 on 5W-30? We can play the "what if" games all day but nowhere does a lack of evidence stand in for evidence. This is exactly what the "where are the blown up 5W-20 engines" is asking of us. It's a pointless tactic useful on a message board but nowhere else.
I will note that I've seen more wrist pin issues on high mileage Modulars since the 5W-20 recommendation came about. I have no proof or suspicion that 5W-20 is the cause, but since we're using anecdotal non-evidence as evidence...
Ford, Honda, Toyota, and Chrysler all have to warranty their engines. Big gamble if the oil is in fact inferior, in fact they'd probably be out of business by now with warranty claims because 20 grade oil has been use for quite a while now.
Not "inferior", but a grade according to a Ford powertrain engineer - that was never rumored to be disgruntled but rather left for a high paying job in NASCAR - lead to higher wear observed in post OEM durability testing tear downs. Not a UOA, but actual comparative tear downs. Also note the he didn't mention GRENADED engines on 5W-20, simply more wear.
Does a manufacturer who was hounded by environmentalists in the late 90s-early 2000s (over the Excursion aka "Valdez") sacrificing potential engine life beyond 150K for god only knows how much of a CO2 reduction over all of the 5W-20 rec'd vehicles produced and sold over that last 10 years and potential CAFE credits really shock you? Really?
Of note, OEM durability tests are equivalent to ~150,000 miles.
Quote:
Police are using it in CV Cruisers all over the USA, we would have heard of police cars blowing up by the hundreds by now. Also not to beat a dead horse, if the application calls for a "thicker" oil, they do recommend it as well.
And how are we supposed to hear about it? Most police agencies that toast an engine attribute it to extreme use or a hot shoe officer and rarely investigate the cause, they simply use their hook up at the local dealer to get a reman'd long-block to put the car back on the streets as quick as possible. How do we know a police cruiser that blew its engine at 150,000 miles wouldn't have gone 250,000 on 5W-30? We can play the "what if" games all day but nowhere does a lack of evidence stand in for evidence. This is exactly what the "where are the blown up 5W-20 engines" is asking of us. It's a pointless tactic useful on a message board but nowhere else.
I will note that I've seen more wrist pin issues on high mileage Modulars since the 5W-20 recommendation came about. I have no proof or suspicion that 5W-20 is the cause, but since we're using anecdotal non-evidence as evidence...
