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Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383150 03/22/20 05:49 PM
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Loobit Offline
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I look at the Winter rating more. Where I live in Tucson, what's recommended in the manual has always worked. If I were to take a road trip somewhere freezing, then I'll put 0w-xx, with the xx viscosity being the same as what's in the manual.

Now, if I was towing, racing, or driving up and down mountains all the time even using engine braking, that's when I'll crank up the hot viscosity a notch. Bearings and cam lobes at higher RPM's will appreciate the extra film strength as the oil temperature shoots up.

Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383155 03/22/20 05:59 PM
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TheLawnRanger Offline
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I have no reason to change. 5w30 works well for my climate.


2011 Impala
2012 Colorado
Oil: 5w30 synthetic
Filters: Wix 51522 for both
Re: What's your viscosity change threshold? [Re: Silverado12] #5383158 03/22/20 05:59 PM
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HyundaiAbuser Offline OP
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Originally Posted by Silverado12
Originally Posted by Mad_Hatter
Originally Posted by HyundaiAbuser
For me I take a lot of summer trips so my 5 speed tiburon gets its share of hours sitting at about 3.5-4k rpm so I step to a Xw40 for peace of mind. I can imagine that a thinner 0w20 or 0w16 would be beneficial for long idling and low rpm applications.

3~4k rpm on the highway is gonna be what, somewhere in the 80's mph?..I can't go that fast for too long here in WA before Trooper Joe tags me. And tickets get real expensive here once you're over 70.. trust me, I know. coffee

Anywho...

I use a 5w30 or 10w even though the OM says to run a Xw20, but it's (5w30/10w30) working for me. I do have 10qts of Valvoline ML 10w40 I scored on the cheap that I plan to run this summer.



Yeah, that's a lot of rpms. As a comparison, my Mustang is a little over 2K at 70 mph.

The speed limit on the turn pikes are 75 along with the major highways so I have to sit there just to keep up in the slow lane. Either way its just how the car is geared, I sit around 3k to go 65 whereas most autos I've driven are 4 speeds and around 2200.


03 Hyundai Tiburon:
PP High Mileage 5w30
Redline MT85
94 Mazda B4000
Supertech 10w40 High Mileage (RIP)
Valvoline Maxlife
Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383183 03/22/20 06:30 PM
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Triple_Se7en Offline
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For my two Korean models, I have enough GF5 5w30 for another year. Then I'll move into buying oil in SP GF6. I may change viscosity then and move my viscosity range down to 0w20..... a top-shelf one like Mobil-1 AP, Modern Engine or Amsoil SS.


2019 Hyundai Santa Fe 2.4 GDI - Pennzoil Ultra Platinum 5w30 / OEM 35504 Filter
2020 Kia Soul X-Line 2.0 MPI - a 50-50 blend of Pennzoil Platinum HM & Pennzoil Gold 5w30 // AC Delco PF1127 Ecore




Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383203 03/22/20 07:06 PM
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Bryanccfshr Offline
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I am comfortable with going up To 0w40 and 15 w40 in a an engine with 0w20 recomendation but ok up to 15w40 in other places.
I Drive a lot of long Texas highway runs some of them in heat well over the century mark. 300 miles with speed limits of 75-80( in Texas reads...minimum safe speed) I also do a bit of towing and for fun I go off-road or do up to 120 miles of sand driving in 4wheel drive.

While the wife is driving one I will run 0w20 because she is a short tripper.

Last edited by Bryanccfshr; 03/22/20 07:13 PM.

2018 Trd Pro 4Runner
2018 Tacoma off-road

Dealer 0w20 to M1 0w40 FS -it depends
Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383240 03/22/20 07:50 PM
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Marco620 Offline
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I'll rock 0w20 Redline but lately its 0w30 M1 and sum LG Biotech. In the summer will introduce small bits of Redline 5w30 to the M1 0w30. Think M1 0w30 is going to be my main/majority wt fill.At 500k,its getting 0w40 M1 or Redline 0w30.


15' Civic r18, 335,000 mi M1 0w30/5w30 & LG Biotech,Castrol CVT Fluid,Redline Si-1
Dog Whisperer! Honda/Acura nerd; detest ethanol,wind, and anything vegan.


Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383242 03/22/20 07:52 PM
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blupupher Offline
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Depends on the vehicle and driving conditions.
My F150 (5.4 2v) I only run 5w-20.
Brother in laws F150 (5.4 3v) I run whatever since his engine is dying (have used 0w-20, 5w-20, a mix of 5w-20 and SAE 30, 5w-30 and current fill of 10w-30, next fill will be back to 0w-20).
My Santa Fe with the 3.3 is currently getting the rest of my 10w-30 stash (another 3 changes), then will get 5w-30.
Sisters Santa Fe is another whatever oil I grab off the shelf.
Mom's Soul will be only 5w-30 since it is a GDI engine and she does only short trips.
Daughter's xB is 0w-20 for now, then 5w-20 once all the 0w-20 is gone, then will start 5w-30. Just because.


'18 Santa Fe: PP 10W-30/OEM
'18 Soul: Synpower 5W-30/ProGuard
'12 xB: M1 EP 0W-20/CQ Blue
'10 Santa Fe: Synpower 5W-30/D+
'04 F150: Magnatec 10W-30/ST
'02 F150: PP 0W-20/M1
'94 VT1100: Peak 15W-40/Wix
Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383298 03/22/20 09:10 PM
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My Ridgeline originally called for 5w-20, but since I run it between NC and FL in hotter temperatures, my next OC will be 5w-30 synthetic blend. In my Camry for the same reasons, I may switch from the standard 0w-20 to 5w-20 synthetic.


Porgy Tirebiter: "Heavy on the 30 weight, Mom."
2017 Toyota Camry XLE, 12K, 2nd owner
2007 Honda Ridgeline RTS, 97K, original owner
2007 Infiniti M35, 115K, original owner
Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383362 03/22/20 11:36 PM
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3.5 Ecoboost, the only way is up....


Sabine Schmitz is the Queen of the 'Ring; Svetlana Kapanina is the Queen of the SKIES...
Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383394 03/23/20 03:53 AM
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20W-50 in my Escort that calls for 10W-40.

Keeps the hydraulic lifters quiet, oil pressure good!


1975 Ford Capri II Ghia 3000 V6 - 315k, Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - 110k, Valvoline Maxlife 10W-40

Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383469 03/23/20 08:11 AM
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Never a whole step either way, usually adding some heavier oil if the engine runs like the oil is too thin, or maybe a little top off with a 20 in a 30 engine in the winter - but not too much on the down side! That has never worked for me.

Like right now I have a 1/2 litre of M10W40 in a 0W20 sump in the VW.

The Motul was way, WAY too thin. That really helped.


2019 VW Jetta S 6MT OCI#2 7378mi-MOTUL Specific VW508.00+VW Service Filter; '17 Subaru Crosstrek CVT OC#9 70254mi-Rotella
Gas Truck 5W20 + Fram Ultra 7317 Filter
Re: What's your viscosity change threshold? [Re: HyundaiAbuser] #5383575 03/23/20 09:59 AM
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Farnsworth Offline
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What is it you are worried about using what the manual says? They design the bearings and all to be used with what they say. If an engine is worn, knocking with low oil pressure,and you need to try and make it last longer you could go thicker to help. At those rpms you are getting a lot of oil flow. 2cents

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