Regular and premium have the same amount of detergent. Does Costco use detergent in their gas?
So, you're curious about Seafoam? (1 Viewer)
- Thread starter TheFuzz
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Regular and premium have the same amount of detergent. Does Costco use detergent in their gas?
Ymmv. Literally.
Tried to find posts other than from Costco's own website.
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2387381
And
http://www.bimmerfest.com/forums/archive/index.php/t-614043.html
Tried to find posts other than from Costco's own website.
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2387381
And
http://www.bimmerfest.com/forums/archive/index.php/t-614043.html
Last edited:
What does ymmv mean? Doing what I am doing I am averaging 16 mpg puttin around Las Vegas in the heat 100+ degrees, with the air conditioning set on 75 degrees. I run everyday, 7-8 miles to the gym and home. 5-6 miles to happy hour. I've owned 4 - 100 series and finally came up with this method for smooth running and good gas mileage. Works for me
Lol. YMMV = Your Mileage May Vary
I did a seafoam yesterday on my 99 LC and now have work to do.
Basically used 1 can thru PCV hose and another can added to the gas tank. A lot of smoke came out. Took the car for a drive and 15 minutes later the car starting working very rough (misfiring). Took to PepBoys to check the check engine codes and it showed P0300, P0302 and P0308 code. Came home and replaced #2 and #8 coils with spare ones. It got much better but it went bad later that night again. I have ordered 2 coils from Norwalk and will change once they arrive.
Oh, forgot to note that I changed the oil and filter before changing the coils.
I hope no damage has been done to my engine.
At the end, not sure if was a coincidence but still wondering why two coils went bad right away seafoam.
I also changed PCV valve, grommet and hose at the end and will change the fuel filter after the dust settles.
Also would like to note at one point the car would not start and I thought my starter needs a rebuild (which it might) but I think it was due to bad coils.
Basically used 1 can thru PCV hose and another can added to the gas tank. A lot of smoke came out. Took the car for a drive and 15 minutes later the car starting working very rough (misfiring). Took to PepBoys to check the check engine codes and it showed P0300, P0302 and P0308 code. Came home and replaced #2 and #8 coils with spare ones. It got much better but it went bad later that night again. I have ordered 2 coils from Norwalk and will change once they arrive.
Oh, forgot to note that I changed the oil and filter before changing the coils.
I hope no damage has been done to my engine.
At the end, not sure if was a coincidence but still wondering why two coils went bad right away seafoam.
I also changed PCV valve, grommet and hose at the end and will change the fuel filter after the dust settles.
Also would like to note at one point the car would not start and I thought my starter needs a rebuild (which it might) but I think it was due to bad coils.
When you are doing this Seafoam treatment through the air intake, you are flooding the engine.
So it is going to be hard ot start and run very rough until it clears up.
Amount of time to clear up will vary, but it typically takes many miles of driving to clear up and a good full throttle on ramp to the expressway is a great way to really clean things out right after treatment.
So it is going to be hard ot start and run very rough until it clears up.
Amount of time to clear up will vary, but it typically takes many miles of driving to clear up and a good full throttle on ramp to the expressway is a great way to really clean things out right after treatment.
I have replaced two coils and now another one cylinder #7 is misfiring. I will change one more coil pack and hope it clears. I am bit worried at this point and thinking to do a compression test.
What makes things even worse that my starter was acting up and now it died and car is parked on the street. I might have to address the starter issue first or at the same time.
What makes things even worse that my starter was acting up and now it died and car is parked on the street. I might have to address the starter issue first or at the same time.
I forgot to mention, doing this treatment can foul your spark plugs since you are flooding the engine when you do this.
I hope you checked the plugs before replacing all the coils.
I hope you checked the plugs before replacing all the coils.
Well... I’m not putting that crap in my engine... haha
Sorry gvegas... hope your LC is alright
Sorry gvegas... hope your LC is alright
The car is back up and running. After I replaced the starter contacts, I also changed all spark plugs and 4 coils.
It is too early to say if seafoam has helped or will help. It depends on the mpg. It for sure created quite a headache.
I ordered a spark plug tester to test 4 old coils to see which ones are really bad. I actually have total of 6 old ones.
If anyone knows how to test with multimeter, I would appreciate that. I have tried but keep getting inconsistent results.
Oh, I also did compression test before putting the spark plugs back. it was about 150 across the board but keep in mind that engine/car was seating in the garage for about a week and it was cold.
Thanks everyone for the info and support
It is too early to say if seafoam has helped or will help. It depends on the mpg. It for sure created quite a headache.
I ordered a spark plug tester to test 4 old coils to see which ones are really bad. I actually have total of 6 old ones.
If anyone knows how to test with multimeter, I would appreciate that. I have tried but keep getting inconsistent results.
Oh, I also did compression test before putting the spark plugs back. it was about 150 across the board but keep in mind that engine/car was seating in the garage for about a week and it was cold.
Thanks everyone for the info and support
Screw seafoam. I tried this out and it gave me a good scare. Isolated the issue to an ignition coil, the plug was completely fine though. Replaced the coil and we’re good again, finally. After some research, it’s a fairly common issue. How it kills ignition coils and wires is beyond me, maybe it overheats the plugs and fries the coils? Either way, never again. Spend the time cleaning things out the proper way, elbow grease.
