Long story short, I no longer have the corolla. On my shelf I have almost 8 gallons of 5w20. I was going to use it in my truck (f150 5.4 3v) but I've been using 5w30 for a long time. I know it's safe, but it's hard to go back lol
Going back to 5w20
- Thread starter 650NutKase
- Start date
TiGeo
$50 site donor 2024
You will get through this, I know it.
Just kidding!!!
Get yourself 8 gallons of a mixed fleet HDEO, something like Delo 15W40 that's CK-4 and SN.
Do 50:50 oil changes with your 5W20 PCMO.
You are now running something like a 10W30 in your F150.
Do 50:50 oil changes with your 5W20 PCMO.
You are now running something like a 10W30 in your F150.
Lost it in the break up. Ducks bc I have oil, filters, and misc parts. I'm probably going to store them and buy another corolla in the future
Perfect use case for 8 quarts of HPL NO VII 
thats the spirit.
What about lucas every oil change...I kid. I have a lot of 15w40 bc of my bike. I might just have to mix. No worries, I just know the truck likes thicker oil
wemay
Site Donor 2023
You'll be fine.
Mine has the new head revision. Normal plugs for me! Currently running ngk iridium. Last ones were motorcraft oem.
TiGeo
$50 site donor 2024
The entire world: one bazillion vehicles running 20 grade oil day in/day out
BITOG: it won't run past 100K
BITOG: it won't run past 100K
4WD
$50 site donor 2025
Everything has been stretched by the thicker oil … 
Running a certified 20wt in 2024 with modern synthetic base and additives will definitely destroy that engine.
- Joined
- Jun 10, 2024
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- 308
5w20 isn't optimal for the 3v 5.4. It needs a HV oil pump if you insist on 5w20.
Paging Cujet!
Paging Cujet!
I think he’s more worried about it destroying his hearing.
I SAID, I THINK HE’S MORE WORRIED ABOUT……… oh never mind.
20 is the new 30… I said what I said.
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