The ‘20 Corolla 1.8L non-turbo owners manual states to use 0W 20 oil with no other oil weight options listed . Are there any special engine requirements (VVT , etc.) for the ‘20 Corolla 1.8L that would prevent a 5W30 synthetic oil being used ?
5W30 In ‘20 Corolla 1.8L ?
- Thread starter ChrisD46
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5w30 is fine. Other country's manuals even allow for 20w50 for that engine. I have a '22 Corolla with the same engine and have used 5w30 since it's first oil change.
No.
Hope you don't get a warranty related engine problem.
Perhaps he’ll post the portion of his owner’s manual or warranty booklet that states the oil grade is connected to his new car warranty.
Until then he’s doing his warranty and the manufacturer a favor by doing a better job of protecting the engine.
can/would the manufacteuer even check the weight? I asked Honda dealer service manager and they said no. Is this all an internet old wives tale? Just saying...
If there was an internal engine related problem, they will ask for oil change records at the minimum. If it shows you didn't use the recommended oil and they want to be hard nosed about it, I can see them denying warranty coverage.
ok- thru records
15W40 if you want. You will take a small mpg hit by not following the "reccomended" viscosity. I filled up for $1.85 after chevron discount recently. Thinking about putting my V8's on cinderblocks again and choking earth for fun.
Recommended Oil Differences
Hello I originally ran across this item on the Toyota forums. The forum discussion was similar to one that I read on this site recently. The 2019 Toyota corolla Hatchback requires the use of 0W16 oil. The owners manual states that If SAE 0W-16 is not available, SAE OW-20 oil may be used...
bobistheoilguy.com
The manual states 0w20 is the "best choice" not the ONLY choice. Big difference.
Specifically for "fuel economy and good starting in cold weather." No mention of protection. Besides, I'm more worried about my Hyundai blowing up than I am one of Toyota's most reliable engines.
Except that nowhere is it related to warranty. The endless fear mongering about this is getting beyond ridiculous.
On the other hand it is a perfect example of what the CAFE required wording is supposed to accomplish.
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The attachment states that 0W-20 is the best choice for good fuel economy and good starting in cold weather. If cold weather is not an issue, and fuel economy is not a priority, then might not other grades be acceptable. 0W-30 and 0W-40 would also provide good starting in cold weather.
Arguably a 0w30 would also meet the definition. It just depends on what you're comparing it to. (ex, 30 grade vs 40 grade)
I would disagree on the sole basis that he could be using some bargin dollar store BS 5w30 which will in fact harm the engine over time. A 0w20 on that basis alone is a better quality oil.
Let's be real though the fear mongering goes both ways.
"xW20 will ruin your engine slowly, it's too thin, it's only for CAFE."
"Using a non-approved oil will ruin your engine and cause warranty issues, it was designed this way, don't mess with OEM requirements."
At the end of the day, it's probably a wash which nothing but conjecture either way. Just like everyone's opinion on interior or exterior looks.
I have 5W-30 in a 2011 Toyota 4Runner Trail even though the manual specifies 0W-20. My 2023 4Runner will have 0W-20 genuine Toyota motor oil during the warranty period and then switch over to 5W-30. The way I see it, 0W-20 is at the very bottom end of the allowable worldwide viscosity range and both vehicles are subject to short trip city driving which qualifies as severe service. I'd rather have the extra margin of protection that a high quality 5W-30 offers for the summer heat in Phoenix. I change oil every 5000 miles instead of the recommended 10,000.
There's the third way that 0w20 is fine as well although fuel economy is the inherent advantage to using it.
Toyota has calibrated oil pumps - don’t do it!
And the circuits
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