Compiled 1NZFE Used Oil Analysis - Toyota Yaris Forums

xpeteyjtx · 09-10-2007, 04:27 PM

So if you view those web pages, you will see that our engines are easy on oil and do not wear quickly.

I don't remember specifically, but I believe that there was an Echo owner running dino oil and the oil analysis looked great after a few thousand miles. To me, it seems as though running synthetic in these engines while they are under warranty, is a waste.

There was also an oil analysis of Amsoil synthetic oil where the owner ran the oil for well over 10,000 miles. The results looked amazing for an oil with that many miles.

My point is... that if something happened to the engine while under warranty (I know, I know, very very unlikely), I would not want to be in the position of trying to prove that my synthetic oil, being in the engine longer than 10,000 miles, did not cause the malfunction. Therefore, I personally stick to cheap (compared to a synthetic, like Amsoil) dino oil for 4,500 miles and don't look back.

As far as the warranty claim goes, I am only speculating as to what the dealer/Toyota will ask of the customer. Maybe they won't want receipts for any oil changes, I don't know. But I wouldn't risk it.

What do you guys think?

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09-10-2007, 04:27 PM	#7
xpeteyjtx Drives: 07 BB Yaris Join Date: Aug 2007 Location: Massachusetts Posts: 54	So if you view those web pages, you will see that our engines are easy on oil and do not wear quickly. I don't remember specifically, but I believe that there was an Echo owner running dino oil and the oil analysis looked great after a few thousand miles. To me, it seems as though running synthetic in these engines while they are under warranty, is a waste. There was also an oil analysis of Amsoil synthetic oil where the owner ran the oil for well over 10,000 miles. The results looked amazing for an oil with that many miles. My point is... that if something happened to the engine while under warranty (I know, I know, very very unlikely), I would not want to be in the position of trying to prove that my synthetic oil, being in the engine longer than 10,000 miles, did not cause the malfunction. Therefore, I personally stick to cheap (compared to a synthetic, like Amsoil) dino oil for 4,500 miles and don't look back. As far as the warranty claim goes, I am only speculating as to what the dealer/Toyota will ask of the customer. Maybe they won't want receipts for any oil changes, I don't know. But I wouldn't risk it. What do you guys think?