Most engine flush products that you buy at the parts store are a mix of diesel and kerosene. I don't seen the need to pay $7 a quart for diesel when I can buy it for $4 a gallon.
Most engine flush products that you buy at the parts store are a mix of diesel and kerosene. I don't seen the need to pay $7 a quart for diesel when I can buy it for $4 a gallon.
And you know this how ?
curtis73 wrote: That is a common myth. They actually have less "detergent." Their ability to dissolve more gunk comes from the fact that they have less stuff dissolved in the base oil to start with... The same reason distilled water will dissolve more salt than tap water. The ATF thing doesn't hurt, but it doesn't really help either. Many think that ATF is a wonderful cleaner because of how long it stays red in a transmission and how clean transmission parts tend to be. But that's backwards... if it were so good at cleaning, it would get cruddy *faster*. ATF stays so nice and rosy red for so long because it doesn't have to deal with nearly as much as engine oil does. Engine oil gets constant high levels of blowby gasses, carbon from combustion, and water from combustion. IMHO, the best thing to do is use a quart of Kerosene or Diesel fuel. Dump it in the crankcase, idle for 20 minutes. Don't blip the throttle, don't drive it, do not pass go or collect $200. You will have significantly reduced the viscosity of the oil and you don't want any additional pressure on the bearings than idle. Drain for a long time... like pull the plug and go watch an episode of Lost. If you have an external oil cooler, loosen the lines and let them drain as well. Refill and drive. If you don't want to go with the extra draining, just keep an eagle eye on your oil pressure gauge and drive gently until its been up to temp a few times to evaporate any remaining solvent. I've done this probably a dozen times. I admit, I haven't done it on more exotic engines. I did it in the M20 in my E30, a couple LT1s, an LS1, and a couple other random aging vehicles. ... and oohhhh, the junk that came out of them
I'm going to try this on a 1993 LS400 I recently bought. Idle for 20 min, for real?
iceracer wrote: And you know this how ?
Because it makes one heckuva Manhattan.
I'm going to try this on a 1993 LS400 I recently bought. Idle for 20 min, for real?
That's what it says on the motor flush bottle... which is diesel/kero anyway. I've done a few with diesel and had good results.
curtis73 wrote:iceracer wrote: And you know this how ?Because it makes one heckuva Manhattan.
Ah, I see !
Poured a quart of kerosene into the crankcase of said LS400 today, no ill effects. It wasn't easy finding kerosene. Also seafoamed the gas and vacuum booster vacuum line.
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