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Pennzoil Platinum 5w20 / 5w30 mix #4727774
04/15/18 11:43 AM
04/15/18 11:43 AM
Joined: Sep 2004
Posts: 611
GA
Anthony Offline OP
Anthony  Offline OP
Joined: Sep 2004
Posts: 611
GA
My 17 GT runs just fine with 5w20 but I am hard on it at times and while 5w20 has long proven itself, is it the best choice for a fairly high strung V8? For 2018 ford made changes to the Coyote V8 but I imagine the clearances are similar. The 18 manual states to use 5w30 on the track but switch back to 5w20 on the street. Surely that has to be CAFE driven. My car holds 8 quarts. I was thinking of going 4 quarts of 5w20 and 4 quarts of 5w30.
Or maybe just a full fill of 5w30. I know mixing is usually not a big deal. I just wonder if there are any chemistry differences that would ultimately make the mix less effective vs just picking a weight and running it.

I know Iím over thinking this lol!
What are your thoughts?


95 Nissan Hardbody V6 - M1 HM 5w30
13 Nissan Titan - Pennzoil Platinum 5w30
17 Ford Mustang GT - Pennzoil Platinum 5w20
Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727782
04/15/18 11:47 AM
04/15/18 11:47 AM
Joined: Dec 2013
Posts: 2,098
socal
barkingspider Offline
barkingspider  Offline
Joined: Dec 2013
Posts: 2,098
socal
5w20 for now. If you track it, 5w30. After warranty, use whatever oil u like


06 Cadillac Escalade Ext
17 Cadillac ATS (wife)
05 Toyota Camry (daughter)
11 GMC Canyon off-road (daily)
Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727785
04/15/18 11:48 AM
04/15/18 11:48 AM
Joined: May 2012
Posts: 1,832
The land of USA-made Subies!
SubieRubyRoo Offline
SubieRubyRoo  Offline
Joined: May 2012
Posts: 1,832
The land of USA-made Subies!
Just stick to the 30 weight. You never know when the itch will strike to drive a hole thru the carpet with the accelerator. Your engine will thank you, plus you can eliminate a separate weight from your oil shopping routine.

Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727793
04/15/18 12:00 PM
04/15/18 12:00 PM
Joined: Jun 2002
Posts: 3,522
Chattanooga, TN
Spector Offline
Spector  Offline
Joined: Jun 2002
Posts: 3,522
Chattanooga, TN
I have been doing the 50-50 5W20-5W30 mix for the past 5 years on my Hyundai. In my climate I could easily do the 5W30 and manual says acceptable as is a 10W but the 5W20 is on the oil cap. Cannot remember why I decided to go with the 50-50 mix but kind of a habit now. Will never know if any difference over the 5W20.

Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: SubieRubyRoo] #4727799
04/15/18 12:07 PM
04/15/18 12:07 PM
Joined: Jul 2005
Posts: 30,977
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,977
NY
Originally Posted By: SubieRubyRoo
Just stick to the 30 weight. You never know when the itch will strike to drive a hole thru the carpet with the accelerator. Your engine will thank you, plus you can eliminate a separate weight from your oil shopping routine.


That's what I would do. The truth is with the 50/50 mix you're really not sure without some kind of analysis what the viscosity of the finished product is anyway.


God Bless Our Troops

Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: demarpaint] #4727801
04/15/18 12:12 PM
04/15/18 12:12 PM
Joined: Oct 2004
Posts: 5,801
Texas, Mentone for work, Galve...
Bryanccfshr Online content
Bryanccfshr  Online Content
Joined: Oct 2004
Posts: 5,801
Texas, Mentone for work, Galve...
just use 5w30 and you are covered for harder driving.


2018 Trd Pro 4Runner M1 0w40
2018 Tacoma off-road Castrol 5w30 Magnatec
Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727803
04/15/18 12:19 PM
04/15/18 12:19 PM
Joined: Mar 2008
Posts: 6,133
Michigan
ZZman Offline
ZZman  Offline
Joined: Mar 2008
Posts: 6,133
Michigan
Way too much thinking. 5w-30!


2003 Mercury Grand Marquis. PP HM 5w-30 and Fram Ultra
2008 Sebring Hardtop convertible. PP HM 5w-30 and Fram Ultra
2006 Kawasaki Vulcan 900 LT. Motul 7100 10w-40 and K&N
Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727805
04/15/18 12:24 PM
04/15/18 12:24 PM
Joined: Apr 2008
Posts: 37,924
Ontario, Canada
OVERKILL Offline
OVERKILL  Offline
Joined: Apr 2008
Posts: 37,924
Ontario, Canada
Just use the 5w-30 if you are concerned.


2018 RAM 1500 Big Horn EcoDiesel
2016 Grand Cherokee SRT
Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: OVERKILL] #4727815
04/15/18 12:34 PM
04/15/18 12:34 PM
Joined: Sep 2015
Posts: 3,939
Connecticut
69GTX Offline
69GTX  Offline
Joined: Sep 2015
Posts: 3,939
Connecticut
That recommendation to use 5w-30 when tracking could also apply to those driving the car routinely in hot climates. After all, the factory recommendation has to "work" from South Texas to Canada. Neither 5w-20 or 5w-30 could possibly be optimum for both regions. I'd consider Georgia in summer to be fairly "hot" such that a 5w-30 makes a lot more sense than someone driving in Northern Maine. You could always just use a somewhat thinner 30 grade...which I think Pennz Plat still is.


----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs
Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727818
04/15/18 12:36 PM
04/15/18 12:36 PM
Joined: Aug 2010
Posts: 1,122
pa
benjy Offline
benjy  Offline
Joined: Aug 2010
Posts: 1,122
pa
being in a hot climate a 10 W would serve you better and a 30 for sure as 20's are as noted for CAFE and NOT your engines health. the 10-30 will have less viscosity improvers and its noack will be better as well

Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727827
04/15/18 12:46 PM
04/15/18 12:46 PM
Joined: Dec 2017
Posts: 2,996
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline
Joined: Dec 2017
Posts: 2,996
SE British Columbia, Canada
For what itís worth, I dropped 5w20 and went to 5w30 for the summer. Might go back to 5w20 this winter but maybe not. My UOA on a 5,000 mile run with 5w20 was excellent.


If you want the job done right......do it yourself.
Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727854
04/15/18 01:16 PM
04/15/18 01:16 PM
Joined: Jul 2005
Posts: 9,934
FT Hood TX
dave1251 Online happy
dave1251  Online Happy
Joined: Jul 2005
Posts: 9,934
FT Hood TX
Just use 5W-30. Your engine will not grenade on 5W-20 but it's nice to have a bit of reserve.


make the inside of your engine oil cap white.
don't use.
Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727855
04/15/18 01:17 PM
04/15/18 01:17 PM
Joined: Jul 2005
Posts: 9,934
FT Hood TX
dave1251 Online happy
dave1251  Online Happy
Joined: Jul 2005
Posts: 9,934
FT Hood TX
I use 30 grades in both vehicles were 5W-20 is recommended.


make the inside of your engine oil cap white.
don't use.
Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: Anthony] #4727856
04/15/18 01:18 PM
04/15/18 01:18 PM
Joined: Mar 2008
Posts: 5,964
South Florida
bubbatime Offline
bubbatime  Offline
Joined: Mar 2008
Posts: 5,964
South Florida
5W20 is CAFE driven, and you already know that 5W30 will offer better protection for your engine. So, we already know the answer. Just use 5W30 from now.


17 Chrysler Pacifica Mobil 1 5W30
13 Yamaha XT250 Valv MC 10W40
10 Acura TSX 2.4 Maxlife Syn 5W30
06 GMC Sierra Nextgen 10W30


Re: Pennzoil Platinum 5w20 / 5w30 mix [Re: ZZman] #4727913
04/15/18 02:32 PM
04/15/18 02:32 PM
Joined: Aug 2012
Posts: 138
Kentucky
fordman65 Offline
fordman65  Offline
Joined: Aug 2012
Posts: 138
Kentucky
Agreed.
Amen.


97 Mercury Gran Marquis GS 4.6L V-8 255k miles
Castrol FS HM 5W-30
WIX Oil 51372 or M1210A

2004 Buick Rainer CL 4.2 6 cyl DOHC
140,000 miles
Castrol Magnatec 5w-30
WIX 51522 or Mobil 1 M1-206
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