charleswrivers
Senior Member
- First Name
- Charles
- Joined
- Nov 3, 2017
- Threads
- 43
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- 3,736
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- 4,468
- Location
- Kingsland, GA
- Vehicle(s)
- '14 Odyssey, '94 300zx, 2001 F-150
- Vehicle Showcase
- 1
(shrug) If nothing else... the thread bringing up LSPI, which I'd heard of and read about a little got me to do some more reading. Looking like GF-6 oil coupled with how one drives would be the ticket. I certainly Poke along at 40 MPH in 6th, turning 1500 RPM regularly and I doubt I'll stop. I'm in vacuum and not trying to accelerate. Just one of many gears I'll let RPMs run low for economy when I'm only maintaining speed on level ground on a mostly empty car. I don't try to accelerate to the point the engines really out of vacuum.
The OPs scenario at 2800 RPM seem a bit on the high side of there LSPI would occur and I'm not sure is applicable... other than the very sudden nature of it. It sounds like it's more of a issue of gas mixing in with the oil on the rings and droplets getting thrown up that spontaneously combust. HP fuel system... more atomized fuel... low resistance rings... low viscosity oils... high cylinder pressures... they all seem to add up. (shrug) When GF-6 is a standard... it'd likely be something I'd look for on a label. There's a split between the GF-6 standards between 0w-16 and the thicker viscosities I haven't read on specifically... and I figure a lighter oil is only going to be that much easier to throw droplets off of. We'll see... it'll be interesting to see how makers go in the coming decade. With CAFE tightening way up in 2025 unless it gets pulled back, even the Civic with under 40 mpgs combined is a good 15 mpg off the average for the most efficient models.
At least the Castrol Magnetec oil I use is on the GF-5/API SN Plus which seems like as high has can be officially certed right now while still supporting my desire to be cheap at about $16/5 quarts. It's what I've been using for a while. It goes in yellow... comes out black... and everything I use it on has yet to explode. I'll just have to see if they bump it to GF-6 or I need to go to something else.
The OPs scenario at 2800 RPM seem a bit on the high side of there LSPI would occur and I'm not sure is applicable... other than the very sudden nature of it. It sounds like it's more of a issue of gas mixing in with the oil on the rings and droplets getting thrown up that spontaneously combust. HP fuel system... more atomized fuel... low resistance rings... low viscosity oils... high cylinder pressures... they all seem to add up. (shrug) When GF-6 is a standard... it'd likely be something I'd look for on a label. There's a split between the GF-6 standards between 0w-16 and the thicker viscosities I haven't read on specifically... and I figure a lighter oil is only going to be that much easier to throw droplets off of. We'll see... it'll be interesting to see how makers go in the coming decade. With CAFE tightening way up in 2025 unless it gets pulled back, even the Civic with under 40 mpgs combined is a good 15 mpg off the average for the most efficient models.
At least the Castrol Magnetec oil I use is on the GF-5/API SN Plus which seems like as high has can be officially certed right now while still supporting my desire to be cheap at about $16/5 quarts. It's what I've been using for a while. It goes in yellow... comes out black... and everything I use it on has yet to explode. I'll just have to see if they bump it to GF-6 or I need to go to something else.
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