Honda Odyssey Warranty vs LiquiMoly

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Dec 22, 2025
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I'm going to be doing the first oil change on my 2025 Honda Odyssey touring, I have about 2 gallons of liqui moly top tec 6200 0w20 free from work. On their website it says ACEA C5 but there is no API or ILSAC rating, would this void my warranty? It's the correct weight and better oil than what Honda uses but I just want to make sure because it's my first time owning a new vehicle with the factory warranty

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How can it void the warranty? The engine going back when this oil is in it, and then the service technician sending the oil for an analysis, and somehow finding something vastly off?
 
I'm going to be doing the first oil change on my 2025 Honda Odyssey touring, I have about 2 gallons of liqui moly top tec 6200 0w20 free from work. On their website it says ACEA C5 but there is no API or ILSAC rating, would this void my warranty? It's the correct weight and better oil than what Honda uses but I just want to make sure because it's my first time owning a new vehicle with the factory warranty

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Only if your engine fails while this is in the sump…
 
Say it was a API spec'd oil, how would you show receipt for it?

I would run it. If receipts are a problem, I would just buy whatever spec oil I needed at Walmart for the paper receipt and then return it.
You are going to suggest a premeditated fraud to prevent an incident that is almost certainly never going to happen? How about using the $100 worth of Liqui moly in lawn equipment, or just hanging on to it for the warranty period, and using the oil Honda wants.

I would add that many $23/jug oils meet Hondas requirements. Also note that I have Molygen 0w20 in the crankcases of two Honda vehicles right now, although both are well beyond factory warranty considerations.
 
It's not fraud. The warranty is tied to engine damage from engine oil selection, which we know isn't going to occur with a thicker oil, but it will help the process with the small brain CSA you have to deal with when you're trying to get warranty coverage for an engine issue.
It’s also not fraud because the warranty is paid for within the price of the new vehicle by the customer. If any wrongdoing is happening it’s the scumbag dealer/OEM trying to get out of warranty repairs.
 
It’s also not fraud because the warranty is paid for within the price of the new vehicle by the customer. If any wrongdoing is happening it’s the scumbag dealer/OEM trying to get out of warranty repairs.
Yep exactly. They will often use any excuse they can find. This just helps them not have an excuse for something that isn't related to engine damage. We're not suggesting running used cooking oil in the engine and saving a receipt for motor oil here.
 
Yep exactly. They will often use any excuse they can find. This just helps them not have an excuse for something that isn't related to engine damage. We're not suggesting running used cooking oil in the engine and saving a receipt for motor oil here.
They also bank on customers not reading the warranty booklet that states the right to arbitration. The arbitrators know every trick in the book with these warranty denials by OEM’s.
 
It's not fraud. The warranty is tied to engine damage from engine oil selection, which we know isn't going to occur with a thicker oil, but it will help the process with the small brain CSA you have to deal with when you're trying to get warranty coverage for an engine issue.
Just to be clear, the idea presented was to anticipate a possible warranty claim, then denied because the engine oil used did not hold the required certifications, but you have headed that off because you have purchased and returned oil that meets specs and you have that receipt.

You have lied about the oil in the sump, and used fictitious documents to support your lie, to the manufacturer’s detriment.

That you have “payed for the warranty,” does not change any of this. Nor does the small minded csa. In fact, the warranty is a financial device that spreads cost of repairs across all buyers, so another group ultimately pays the price.

All that said, that excellent Liqui Moly oil is not going to cause a failure imho. Further, I am not sure I see Honda pushing the point in the unlikely scenario. (Have dealt with Honda two major warranty repairs and they were reasonable.

But I’d prefer to take a financial hit than lie and present fraudulent documentation…. Or just use compliant oil while in warranty period.
 
Just to be clear, the idea presented was to anticipate a possible warranty claim, then denied because the engine oil used did not hold the required certifications, but you have headed that off because you have purchased and returned oil that meets specs and you have that receipt.

You have lied about the oil in the sump, and used fictitious documents to support your lie, to the manufacturer’s detriment.

That you have “payed for the warranty,” does not change any of this. Nor does the small minded csa. In fact, the warranty is a financial device that spreads cost of repairs across all buyers, so another group ultimately pays the price.

All that said, that excellent Liqui Moly oil is not going to cause a failure imho. Further, I am not sure I see Honda pushing the point in the unlikely scenario. (Have dealt with Honda two major warranty repairs and they were reasonable.

But I’d prefer to take a financial hit than lie and present fraudulent documentation…. Or just use compliant oil while in warranty period.
All that overlooks the question if it was proven the oil itself actually caused the damage? The use of non-spec'd fluids is not grounds for warranty denial itself alone and is just a clerical scape goat of leveraging financial lawfare that is in their favor.
 
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