I doubt there is anything better about the additive pack from just a viscosity change unless you went from a cheap product to a better one.
Using 5w-30 instead of 5w-20
- Thread starter kwg2005
- Start date
My Gen Coupe turbo came with 5w20 in it and that's what's on the oil cap but Hyundai quickly changed that after a year and complaints from the desert areas.
Been running 0w40 most of the time. Hyundai says if it's hot enough you can go up to a 50w.
Been running 0w40 most of the time. Hyundai says if it's hot enough you can go up to a 50w.
What did the desert areas have issues with w/r to 20 vs. 30 grade oils?
It was Saudi Arabia hot where they recommended 20w50 then.
0w20 LiquiMoly 6600 to Motul eco energy 5w30. Two totally different types of oil. Before that was using PUP 5w20.
I use it in my 0W-20 Forester I am shifting to Mobil1 0W-40
Hello fellow 615 resident (I'm in Franklin)! My Acura specs 5W20 and I switched to 5W30 at the recommendation of some forum members here and sheer convenience along with hedging my bets in staving off future consumption issues the J37 V6 is known for. I'm about to reach my next OCI and HPL PPCO 5W30 is going in and I will be using that, well, indefinitely. My wife's car ('21 Mazda CX-9) specs 5W30 already so in one more OCI when she reaches the end of the prepaid Mazda maintenance package we will be switching to the same HPL 5W30 my Acura will use. I like the idea of keeping both cars on the same oil out of convenience even though the engine tech in both is pretty different - high revving naturally aspirated V6 vs large bore four cylinder direct injection turbo.
Of course the MPG rating the EPA gives is based on a typical driver. In most cases it isn't too hard to beat EPA by a couple MPG.
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I live in Maury County but commute to Franklin daily for work. Only been in TN since 2021. I'm one of those **** Yankees who are bidding up the home prices.
My Geneiai Coupe turbo I git a tune and the mileage went up immediately about 4 mpg. Then years later changed the slacking timing chain and got it up another 3 mpg on top of that. Getting 33-36 mpg now depending. I took it out on the track for a day after the tune and got ~27 mpg for the day.
Really? Learn something new here every day. I was under the impression that EPA testing was still done on a dyno with highly trained analysts controlling the accelerator.
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Correct. They are done on a dyno, but they are simulating a "typical" driver. That's why it's not hard to beat it.
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The highway fuel mileage test isn't conducted at a constant speed.
"The EPA acknowledges that its lab tests aren't intended to reflect the exact real world experience of most drivers. Rather, it positions its highway fuel mileage numbers to be used as a level playing field comparator at buying time, given that all vehicles are tested using the same baseline conditions and are designed using national averages for key factors affecting fuel consumption. Drivers who encounter hilly terrain, use air conditioning regularly, drive more aggressively, or deal with colder than average temperatures will see the biggest departure from advertised highway fuel economy."
https://www.capitalone.com/cars/lea.../how-do-epa-highway-mileage-ratings-work/1731
https://dieselnet.com/standards/cycles/hwfet.php
"The EPA acknowledges that its lab tests aren't intended to reflect the exact real world experience of most drivers. Rather, it positions its highway fuel mileage numbers to be used as a level playing field comparator at buying time, given that all vehicles are tested using the same baseline conditions and are designed using national averages for key factors affecting fuel consumption. Drivers who encounter hilly terrain, use air conditioning regularly, drive more aggressively, or deal with colder than average temperatures will see the biggest departure from advertised highway fuel economy."
https://www.capitalone.com/cars/lea.../how-do-epa-highway-mileage-ratings-work/1731
https://dieselnet.com/standards/cycles/hwfet.php
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Better listen to these guys ...
https://www.way.com/blog/does-the-use-of-5w30-oil-instead-of-5w-20-oil-damage-your-engine/
Most people have no idea that even the "highway" mileage isn't at a steady cruising speed. I didn't read the summary, but, IIRC, the average speed during the highway test is 48 mpg, with several speed-up and slow-downs involved. I don't recall the top speed they reach, but, it certainly isn't cruising at a constant speed.
wemay
Site Donor 2023
I'm also thinking about switching to 10/5w30 because i can use it in both vehicles, preferably 10W-30. My OCI will remain short being that i idle excessively now that my son's school is 1.5 miles away and i have to sit and wait in 90f / 75% humidity at pickup time.
But if I do, it won't be for some time unless I give away a lot of 0W-20 not to.mention a subscription for Amzn Bsc 0w20 every 3 months.
But if I do, it won't be for some time unless I give away a lot of 0W-20 not to.mention a subscription for Amzn Bsc 0w20 every 3 months.
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I share a bias for higher viscosity and believe the push to lower viscosity is pushed by fuel economy and not engine protection. However, fwiw, a Honda mechanic who is pretty experienced and knowledgeable once told me going to a higher viscosity in a J35 (from 0w20 to 5w30) was not a terrific idea because the oil could actually “ride over” and help tear up the rings. That is one person’s view and not definitive but he has been a Honda tech for 20+ years and torn down a lot of J35s related to the VCM issues Honda has had.
The car is out of warranty anyway so it is largely your call, but my way of keeping things simple is to follow what is in the manual. The manufacturers are under pressure for fuel economy, no question, but from having worked for clients in that space I can tell you that customer reputation is very important, and they aren’t going to have cars so that the motors blow up at 100k if the service interval and lubricant requirements are met. That ruins what they call the “customer experience” and they know it will hurt their business tremendously if they do not earn repeat customers.
Good luck with it, whatever you choose.
The car is out of warranty anyway so it is largely your call, but my way of keeping things simple is to follow what is in the manual. The manufacturers are under pressure for fuel economy, no question, but from having worked for clients in that space I can tell you that customer reputation is very important, and they aren’t going to have cars so that the motors blow up at 100k if the service interval and lubricant requirements are met. That ruins what they call the “customer experience” and they know it will hurt their business tremendously if they do not earn repeat customers.
Good luck with it, whatever you choose.
Triple_Se7en
$50 Site Donor 2024
The thread-starter is about to enter on BITOG's six month MIA List, come New Years Day.
But if I were he, I'd run 10w30 all year in Nashville.
But if I were he, I'd run 10w30 all year in Nashville.
Over and over here on the 'tog this is said. Sure, CAFE drives the lower viscosity oils but where are all the cars on the side of the road? There aren't any....because....the engineers have figured out you don't need the thicker oils to get a good service life out of a vehicle under the conditions most folks drive. So why not get some mpgs even if it's fractions of a % if you can do so with no measurable difference in service life for the majority of consumers? The small % of oil nerds here can run 50 grade to drive their 400K mile '99 Camrys to the store and feel warm/fuzzy about it or the track crew, towing crew, etc. all can run the thicker oils that make sense for those use-cases. Average Joe in his new Nissan can drive on 16 grade and have no cares in the world and as long as that 16 grade is changed regularly AND the use-case is driving the fam on vacay each year and dropping little Johnny off at his fancy private school with a Starbucks run on the way home, that Nissan will last a long time running that CAFE-conspiracy water. Also, I recently learned that while many BITOG thickies think the owner's manual is worthless w/r to oil recommendations/requirements, it is the Bible w/r to fuel ethanol content b/c those same engineers actually paid attention in the class on vehicle fueling systems....just not lubrication.
In before all of it.
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