Recent Topics
Pittsburgh Dad, this guy is a trip
by Rat407
06/18/18 02:06 PM
14 Jeep GC 5.7, PP 5w20 & 0w20
by Vigg
06/18/18 01:52 PM
Sell me on a SSD drive...........
by ZZman
06/18/18 01:07 PM
need some ideas on my issue
by matrass
06/18/18 12:36 PM
Put Pennzoil Platinum Euro L in a Honda.
by dunlop0078
06/18/18 12:36 PM
BMW V8 Oil Consumption Fix
by doc540
06/18/18 11:25 AM
More info on Valvoline Modern Engine Oil
by buster
06/18/18 11:07 AM
Shelf life of synthetic 2 stroke engine oil ?
by ScottMill
06/18/18 10:34 AM
Oil sample extraction
by Tikka
06/18/18 10:30 AM
Re-using building materials esp nails
by andyd
06/18/18 08:57 AM
Central A/C [censored] out
06/18/18 08:43 AM
08 Scion tC under valve cover pics
by Highboy
06/18/18 08:39 AM
Storing extension ladded in garage?
by maverickfhs
06/18/18 08:27 AM
Do you let your tool batteries go dead in storage
by Snagglefoot
06/18/18 07:20 AM
Any news on what happened to this plane?
by Exhaustgases
06/18/18 02:36 AM
E4OD fluid ?
by Exhaustgases
06/18/18 02:23 AM
Update password ?
by meadows
06/17/18 11:59 PM
Delayed Sleep Phase Disorder
by Reddy45
06/17/18 11:56 PM
Nissan DLR put 0w20 in car that specs 5w30. worry?
by CrAlt
06/17/18 10:40 PM
revive Nicd battery
by Donald
06/17/18 10:27 PM
Newest Members
WtsTacoma01, Orion62, Revd, blinky1041, mostdecent
65262 Registered Users
Who's Online
87 registered (Audios, bdcardinal, Atesz792, 77GrandPrix, Astro14, 7 invisible), 1641 Guests and 40 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65262 Members
67 Forums
285524 Topics
4765105 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#4439228 - 06/23/17 08:17 AM Using up my QS Defy 10W-30 "SL" oil
novadude Offline

Registered: 01/16/03
Posts: 1464
Loc: Shippensburg, PA
I have 3 qts of the old QS Defy 10W-30 with high ZDDP left over. Need five qts for an oil change. Since SL Defy is no longer available, which oil would you choose to mix with the 3 qts of Defy? Does anyone know if the SN additive package in "new" defy is the same with reduced ZDDP? If so, I guess this would be the obvious choice.

#4439243 - 06/23/17 08:42 AM Re: Using up my QS Defy 10W-30 "SL" oil [Re: novadude]
ARCOgraphite Offline

Registered: 05/17/09
Posts: 11963
Loc: N.H, U.S.A.
Last Fall just used my last old stash Quart of Defy with Slick 50 (10w30) in the Tecumseh Snowblower.

One of the best oils I ever used.

I would just mix it with some Formula Shell or QSGB.

Zinc gets used up under high stress, so the Defy SL its just starting 50% higher treat rate than current. When you run the oil hard you will use up that zdp. Its still shows in a UOA but its used and converted.

You may also use Castrol Motorcyle 4T "Dino" which will have more zinc than defy. That is AP SH rated due to high Phosphorous from the ZDP treat rate.
2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter

#4439267 - 06/23/17 09:17 AM Re: Using up my QS Defy 10W-30 "SL" oil [Re: novadude]
69GTX Offline

Registered: 09/23/15
Posts: 3815
Loc: Connecticut
I had 5 qts of the SL Defy last year and used them up 1-2 quarts at a time in a mixture of PP/QSUD oils. I would imagine the new SN version has much less Phos/Zinc. If you want to maintain that higher phos/zinc there ought to be a 10w/30 or 10w/40 Pennzoil High Mileage oil with strong Zn levels you can mix.

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

#4439318 - 06/23/17 10:11 AM Re: Using up my QS Defy 10W-30 "SL" oil [Re: novadude]
Kuato Offline

Registered: 10/23/05
Posts: 7094
Loc: Colorado
Just buy 2 quarts of the newer QS to match up the additive packages. Done!
Thick vs Thin test: 15k / 43k miles complete

#4439418 - 06/23/17 12:17 PM Re: Using up my QS Defy 10W-30 "SL" oil [Re: novadude]
NormanBuntz Offline

Registered: 07/27/13
Posts: 2120
Loc: Outer Banks, NC
QS has changed the name from Defy to High Mileage. It's $16-17 a jug at Walmart. I'm currently using it in the wife's Infiniti. Some Walmarts may carry the individual quarts. If the QS High Mileage is not available, I'd use the Pennzoil High Mileage to go with your leftover quarts.
2017 Honda Odyssey SE, 14K
2013 Honda Accord LX, 58K
2007 Honda Ridgeline RTS, 86K
2007 Infiniti M35, 104K