DIY: SC300/400 Seafoam Guide! With Pictures
03-03-14, 12:49 PM
#1
DIY: SC300/400 Seafoam Guide! With Pictures
Hello CL, I'm here because I planned to Seafoam my car. I hunted around the forums and couldn't find a thread with pictures of a step to step guide on how to properly Seafoam my vehicle. I figured I could help out the community by making a DIY thread myself.
Let's get started!
Required Tools/Products:
Step 1) Buy your can of Seafoam, and plan on changing your oil ASAP after treatment.
Step 2) Drive your vehicle around, and get it to normal operating temperature.
Step 3) Pull your car into your driveway, NOT IN THE GARAGE and pop the hood
Step 4) Get three disposable cups and divide up the can of Seafoam evenly between the cups.
Step 5) Turn off your vehicle and locate the PCV hose, remove it and flip it pointing upward and add a funnel to it.
Step 6) Start the vehicle. With your friend helping you, SLOWLY pour 1 cup of the Seafoam into the funnel and have your friend give the car gas so it doesn't bog out.
Step 7) After your pour the cup through the PCV hose, put it back to how it was before you flipped it. Then shut the vehicle off.
Step 8) Open your gas tank and pour 1 cup of the Seafoam into the tank using a funnel
Step 9) Open your crank case oil cap and pour 1 cup into it using a funnel, and then put the cap back on.
Step 10) Wait a total of 5 minutes to let it soak in and do its job.
Step 11) Start the vehicle and let it idle and give it gas occasionally until the smoke stops coming out the exhaust.
Step 12) Either let it idle out completely, or take it for quick spin. It's entirely up to you, I took it for a spin with no failures, but this was only about a 2 minute joy ride down the street.
Let's get started!
Required Tools/Products:
- One can of Seafoam Treatment
- Three Disposable cups
- One funnel that is fairly narrow at the bottom
- Buddy to help you
Step 1) Buy your can of Seafoam, and plan on changing your oil ASAP after treatment.
Step 2) Drive your vehicle around, and get it to normal operating temperature.
Step 3) Pull your car into your driveway, NOT IN THE GARAGE and pop the hood
Step 4) Get three disposable cups and divide up the can of Seafoam evenly between the cups.
Step 5) Turn off your vehicle and locate the PCV hose, remove it and flip it pointing upward and add a funnel to it.
Step 6) Start the vehicle. With your friend helping you, SLOWLY pour 1 cup of the Seafoam into the funnel and have your friend give the car gas so it doesn't bog out.
Step 7) After your pour the cup through the PCV hose, put it back to how it was before you flipped it. Then shut the vehicle off.
Step 8) Open your gas tank and pour 1 cup of the Seafoam into the tank using a funnel
Step 9) Open your crank case oil cap and pour 1 cup into it using a funnel, and then put the cap back on.
Step 10) Wait a total of 5 minutes to let it soak in and do its job.
Step 11) Start the vehicle and let it idle and give it gas occasionally until the smoke stops coming out the exhaust.
Step 12) Either let it idle out completely, or take it for quick spin. It's entirely up to you, I took it for a spin with no failures, but this was only about a 2 minute joy ride down the street.
Enjoy your improved throttle response, lower idle RPMs, and improved MPG as well as lower emissions. 
Last edited by Shrugy; 08-20-14 at 10:07 AM.
03-03-14, 01:29 PM
#4
1JZ Single SC400
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Good write up man. Thank you. Here is one that OLT did awhile back. It does cover the general knowledge of do's and don'ts, but not a DIY like yours.
This also goes in the performance and maintenance section.
https://www.clublexus.com/forums/per...k-in-here.html
This also goes in the performance and maintenance section.
https://www.clublexus.com/forums/per...k-in-here.html
03-03-14, 04:14 PM
#5
Thank you all that have posted, and thanks again staff members here on CL for moving this to the correct section to better assist members.
If you have any questions, feel free to post.
Last edited by Shrugy; 03-03-14 at 04:21 PM. Reason: Edit
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03-05-14, 07:53 PM
#11
Well if I were to replace the battery, which I plan to do over the summer, What brand/model would you recommend?
I have to deal with some harsh climates here in PA so I would prefer it to have a little better action in the cold winters.
I have to deal with some harsh climates here in PA so I would prefer it to have a little better action in the cold winters.
03-05-14, 08:11 PM
#12
Kirkland Signature at Costco is an amazing battery and top rated by Consumer Reports. If you get any, try and get that brand. I just use the Wal-Marts 1 year warranty battery Everstart Maxx battery in my SC, but our Suburban is Kirkland and it works well. If you dont want to go cheap, Gel batteries are top.
