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Top off 10w-30 with 20w-50 ok? #4469650
07/25/17 05:46 AM
07/25/17 05:46 AM
Joined: Feb 2008
Posts: 1,065
MA.
Camprunner Offline OP
Camprunner  Offline OP
Joined: Feb 2008
Posts: 1,065
MA.
Changed oil with Valvoline 10w30 a few days ago long story short installing new oil filter now (see post on bad STP filter) have Napa (Valvoline) 20w50 synthetic on the shelf would like to use a quart to top off I know it will increase the viscosity but it is summer is this ok?

Last edited by wwillson; 07/25/17 06:03 AM. Reason: subject clarification
Re: Top off 10w-30 with 20w-50 ok? [Re: Camprunner] #4469656
07/25/17 05:53 AM
07/25/17 05:53 AM
Joined: Jun 2011
Posts: 1,803
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,803
Crawfordville FL
Should be fine. How many quarts is your sump total?


2010 Ford Fusion SE 3.0L V6, 181 miles M1 HM 10w-30
Re: Top off 10w-30 with 20w-50 ok? [Re: Camprunner] #4469672
07/25/17 06:15 AM
07/25/17 06:15 AM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
Should be fine as Silver stated. If the oil is at the bottom of the operating range why not just get the proper oil? We are only a couple months away from cooler weather



97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass
Re: Top off 10w-30 with 20w-50 ok? [Re: SilverFusion2010] #4469677
07/25/17 06:18 AM
07/25/17 06:18 AM
Joined: Feb 2008
Posts: 1,065
MA.
Camprunner Offline OP
Camprunner  Offline OP
Joined: Feb 2008
Posts: 1,065
MA.
Originally Posted By: SilverFusion2010
Should be fine. How many quarts is your sump total?


Sump is approx 5.5 quarts Nissan VQ40DE V6 5w30 is recommended has 60,000 miles

Re: Top off 10w-30 with 20w-50 ok? [Re: Camprunner] #4469683
07/25/17 06:20 AM
07/25/17 06:20 AM
Joined: Feb 2008
Posts: 1,065
MA.
Camprunner Offline OP
Camprunner  Offline OP
Joined: Feb 2008
Posts: 1,065
MA.
This change will see high load lots of towing and change out at end of September with prob 4-5,000 miles.

Re: Top off 10w-30 with 20w-50 ok? [Re: Camprunner] #4469697
07/25/17 06:36 AM
07/25/17 06:36 AM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
I see no issues. Good engine, just wished that they had detuned it a bit for better mileage. My X with all fluids changed to synthetic I am getting 21 mpg. Happy travels



97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass
Re: Top off 10w-30 with 20w-50 ok? [Re: Camprunner] #4469730
07/25/17 07:06 AM
07/25/17 07:06 AM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Just one quart ? Won't hurt a thing. Your engine may actually tell you it likes it that way.

Re: Top off 10w-30 with 20w-50 ok? [Re: Camprunner] #4469767
07/25/17 07:45 AM
07/25/17 07:45 AM
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
I topped off my 10w30 with 5w20 on the QR25DE NISSAN 4 banger. The engine was telling me it wanted a LIGHTER oil to run correctly.

What's the Motor telling you?

Does this have VVT? Hydraulic VVT are viscosity "picky" to get good low end torque; you have to keep the intake cam advanced at low RPM. Increasing RPM + Oil pressure retards cam timing.

Last edited by ARCOgraphite; 07/25/17 07:47 AM.

2014 Nissan Rogue S CVT, OC#10 47272mi-QSUD10W30+5w20 Toughguard Filter; '17 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: Top off 10w-30 with 20w-50 ok? [Re: Merkava_4] #4469814
07/25/17 08:18 AM
07/25/17 08:18 AM
Joined: Sep 2008
Posts: 3,987
Southeast Texas
gfh77665 Offline
gfh77665  Offline
Joined: Sep 2008
Posts: 3,987
Southeast Texas
Originally Posted By: Merkava_4
Just one quart ? Won't hurt a thing. Your engine may actually tell you it likes it that way.


Agreed. It will be beneficial to your engine. Oil naturally shears down to a lower viscosity, so topping off with a quart of heavier weight oil will likely bring it back to the perfect range. I purposely use higher viscosity top off oil.

Re: Top off 10w-30 with 20w-50 ok? [Re: Camprunner] #4470040
07/25/17 12:43 PM
07/25/17 12:43 PM
Joined: Jun 2010
Posts: 591
Florida
Dumc87 Offline
Dumc87  Offline
Joined: Jun 2010
Posts: 591
Florida
Funny this thread mentions Nissan
I use to typically put a 5w30 or 5w40 in the VG30DE in my 300ZX, but I swear the engine "told" me it ran best on M1 15w50


'90 Z32 - PP HM 10w30
'98 ZJ - PYB HM 10w40
'02 G20 - QS UD 5w30
'09 Matrix - QS UD 0w20
Re: Top off 10w-30 with 20w-50 ok? [Re: Dumc87] #4470156
07/25/17 02:26 PM
07/25/17 02:26 PM
Joined: Aug 2008
Posts: 2,191
Cali
Malo83 Offline
Malo83  Offline
Joined: Aug 2008
Posts: 2,191
Cali
My old SBC tells me it'll run on anything, 30wt,20w50, 10w40,10w30 and even 15w40, as long as the oil is fresh and has new filter as it should be! thumbsup Cheers2

Re: Top off 10w-30 with 20w-50 ok? [Re: Camprunner] #4470160
07/25/17 02:30 PM
07/25/17 02:30 PM
Joined: Jul 2017
Posts: 378
PR CA, USA
2strokeNorthstar Offline
2strokeNorthstar  Offline
Joined: Jul 2017
Posts: 378
PR CA, USA
Oil is better than no oil. Ideal? No. Nothing will happen though.


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