I Have a 97 LX450 (same as a 97 80 series Land Cruiser). I just had the Headgasket replaced and there was a lot of carbon on top of the pistons. A lot more than expected for 114,000 miles. I had a great mechanic who cleaned up the pistons on top of the block really nice. The before and after pictures can be seen in this thread on IH8MUD:

http://forum.ih8mud.com/showthread.php?t=70669

He also had the head milled and cleaned. The only place he couldn't get all the carbon out was the ring packs. So I started the AutoRx treatment today to clean out the Ring Packs. Questions I have since a lot of the carbon and crap has already been cleaned out, do I need one treatment or two. I plan on doing the maintenance phase when I change my oil. After the rinse phase I will go back to the Redline synth 5-30W oil that has Ester (spell?) in it.

Any advice would be appreciated.

Thanks

Personally I'd do two treatments.

Then definetly start using FP60 or something man!

darkdan,

Do you think one cleaning and rinse phase of Auto-Rx and the 3oz maintenance program would work any better just thinking out loud.


Daryl

Since you had a large amount of carbon on the piston tops I vote for a 2X ARX treatments. Ring packs can really be stuborn to clean well.

Whenever I spill anything at work my boss tells me to clean it twice because he'd rather I waste time then leave a stain.....same principle.

Please follow the application for engine over 100,000 miles do two Auto-Rx treatments. I know my chemistry and thats why we guarantee results. However your expected to follow the instructions.

Thanks for the replies. I will plan on doing two applications. I am very carefully following the instructions.

What is FP60?

Never mind the FP60, I did a search. I use Redline Fuel System Treatment and twice a year I use the BGK44.

I bought this vehicle with 98,000 miles on it and believe the carbon build up was from neglect by the PO. I have had to change the Tcase already as a bearing went out that is likely attributed to not naking sure there is eneough gear oil.

When I am done with the AutoRx, I will switch back to the Red Line Synth oil I have been running for the last 6 months. All my gear oils have been changed to Red line.

I will use cheap dino for the rinse phase.

I plan on doing the maintenance method after the second cleaning.

Does that seam reasonable for future PM and fluids?

Thanks.