God help those circuits… such fragility.And the circuits
5W30 In ‘20 Corolla 1.8L ?
- Thread starter ChrisD46
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Newer Toyota's that specify 0W-16 have an electric oil pump designed to maintain lubrication with a low viscosity oil as stated in a BITOG post.
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No they do not.
Apparently, I should have verified what I found in a BITOG post. Well then, do the engines that specify 0W-16 have pressure control valves operated via ECM?
The diagrams in that thread you're referencing show how the pump works.
https://www.shell-livedocs.com/data/published/en-US/126583ca-eb28-4530-8bd6-067e647a43af.pdf
PP 0W16
KV @ 40c = 35.6 cSt
KV @100c = 7.1 cSt
The pump and ECM can handle this much of a variation with 0W16 alone… Why couldn’t it handling the less significant difference between16 versus 20?
Would you be kind enough to provide a link to that post?
Great to hear … I wanted to make sure no reduced oil galley size holes , VVT issues with a thicker oil , etc. that may require staying with 0W20 . My other vehicles use 5W 30 SP D1 / Gen 3 so looking to standardize on oil .
https://bobistheoilguy.com/forums/threads/toyotas-new-electric-oil-pump.355614/ I only read the first 5 replies, not the entire 10 pages.
Assuming they did check it, could they even tell? There are plenty of UOA’s out there which show the oil slipping below grade after some use due to various factors outside of the owners control.
Stupid Question : Do the majority of Toyota Dealers use Toyota Genuine Motor Oil for serving their vehicles ? Toyota has a reputation for having a very good quality synthetic oil .
When I had my old Corolla, I know that my dealership if you didn't request the Toyota Genuine Motor oil you would get Chevron!
It says, if not 0W20 then 5W20. If you want to give Toyota an easy excuse to deny an engine warranty claim, not using the oil recommended is near the top of the list just below not changing it enough. Go all the way and use 5W50. I put that in a truck that takes 5W30 but it has over 200,000 miles.
The consensus is varied. Some who have worked for dealerships say they use whatever is the cheapest in bulk, and others have said they use only the manufacturer’s brand of oil… only way to know is to ask your dealer.
Keep reading.
wemay
Site Donor 2023
The fear mongering on this Forum is hilarious. On both sides.
OP, 5W30 is fine, as is 0W20. It's your choice for your car.
OP, 5W30 is fine, as is 0W20. It's your choice for your car.
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Since 5w30 is the same viscosity as 0w20 at a slightly lower temp, the likelihood that it would ever cause an issue in any engine specified for 0w20 is very low.
The likelihood a dealership would even find a 30 weight oil is very low too. The viscosity overlap is so close and so temperature dependent it’s not really a concern, IMO.
The only reason to avoid 5w30 would be in places where cold starts are below about -10F. Maybe a bit higher if you are one of those “first 3 seconds” wear people. But even then a 0w30 would be fine. Ideally, do a run of 0w20, then a run of 0/5w30 and see which UOA is better.
The likelihood a dealership would even find a 30 weight oil is very low too. The viscosity overlap is so close and so temperature dependent it’s not really a concern, IMO.
The only reason to avoid 5w30 would be in places where cold starts are below about -10F. Maybe a bit higher if you are one of those “first 3 seconds” wear people. But even then a 0w30 would be fine. Ideally, do a run of 0w20, then a run of 0/5w30 and see which UOA is better.
https://bobistheoilguy.com/forums/t...rce-four-cylinder-electronic-oil-pump.363945/ thread is 3 pages long, 6 months more recent and contains a link to https://global.toyota/en/powertrain/engine/ that includes a description of the continuously variable capacity oil pump.
It positive displacement pump. It can handle higher and lower viscosity fluids and can operate at high pressures and relatively low flows efficiently. The ECU is able to control pressure and flow as needed based on the needs of the engine.
You’re claiming you can use an uncontrolled $30 spectrographic analysis to determine which winter rating produces less wear?
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