500ml Liqui Moly 2030 Pro-Line Fuel System Cleaner Expired

I read liquid molly and was like oh boy lol

Scientifically speaking this product is just naptha/distillates (naptha/kerosene) basically a solvent. PEA is the product that really cleans out non GDI engines and can clean up injectors. The Jectron Moly product is more toward this.

So if you are going to spend your hard earned money:

1. If you use Tier 1 gas (go look it up), you likely dont need any of these.
2. PEA-based ones Techron CONCENTRATE, Redline, Ams-oil etc are do a great job and will clean where gas goes but NOT turbo and GDI intakes. Read on.
3. MMO (marvel mystery oil seems to be a fan favorite), go check out this, but I am not sure what this does for build-up. So feign ignorance on this.

If you have a GDI and or turbo NONE of these products will help other than where the gas goes which is primarily injectors, cylinders, exhaust. The entire pre-combustion system is not treated by this, and is frankly sad that there is not good education on this. Many a VW have died from this.

So for non GDI/turbo: 1. Tier 1 gas or a PEA concentrate. It works.
For GDI/Turbo, 1. Tier 1 gas, PEA concentrate AND something like GRC GDI turbo/intake cleaner that you do 2x a year like a PEA treatment. This requires you to be upstream of the combustion chamber, but it will really make a difference.

This LM product is simply a solvent, it may help a little bit but for the price a PEA additive is far superior and you SHOULD treat pre-combustion in GDI/turbo setups. Jectron is more aligned if you are looking to do some real work and like LM.

Now I know some GDI systems spritz the intake (like in some Honda), but cant hit the turbo, so YMMV.

I do both 2x a year around oil change time.

From time to time I use Lucas and it quiets down the valves but performance-wise I am not sure it really does anything, esp if you don't have hydraulic lifters that many Kia/Hyundai are missing. So not sure that product is worth it, but prob in the same cat of Seafoam as YMMV.

Seafoam - Was designed for products that don't exist today in modern engines, so it is probably a pure waste of money. It say hydrocarbon blend in MSDS but its probably just provides some temporary coating which modern engines and oils take care of YMMV. For older vehicles, perhaps its lubricity properties and anti-water help from the inevitable blow-by, small coolant leaks, and gaskets. But those are temporary in nature and may require maint doese.

Go look up the MSDS of the products if you really want to see what's in them.

I don't easily succumb to marketing hype or the allure of "snake oil" type products. Liqui Moly is a German company that has been around a long time and they make some very well-regarded products.

There are a lot of BS additives on the market; dare I say the majority of them are BS. But Liqui Moly products are similar to Chevron's Techron in that they actually work well. Do some research and you will find almost universal praise for LM's "Diesel Purge" among diesel forums. Their "Ventil Sauber" works great on port injected engines for reducing carbon buildup on the rear of intake valves. Jectron works well too.

I haven't tried this particular product, but based on their track record I'm ordering several bottles. Thanks OP!!