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Amsoil in a 5.7 (~1000hours) or still use T5 ? #4761388
05/18/18 08:09 PM
05/18/18 08:09 PM
Joined: Sep 2013
Posts: 94
Montreal,Quebec,Canada
Yannick Offline OP
Yannick  Offline OP
Joined: Sep 2013
Posts: 94
Montreal,Quebec,Canada
Hello,
I have a Mercruiser 5.7 with around 1000hours in the heart, I always put Rotella T5 15w40, but now the API SM is over.

What do you think switching at 1000hours on full Synthetic AMSOIL 15w40 ? AM I gonna expect some leak problem ?
Should I keep going with T5 even without the API SM ?

thanks

Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Yannick] #4761394
05/18/18 08:19 PM
05/18/18 08:19 PM
Joined: Jun 2009
Posts: 3,694
Chicago, IL
tomcat27 Offline
tomcat27  Offline
Joined: Jun 2009
Posts: 3,694
Chicago, IL
Should be fine. If it leaks, switch back.i run something different every year in mine.


2019 Cherokee, 2015 Rogue, 2014 Sentra, 2001 Camry, 2005 Starcraft, 1998 Dodge B1500
1996 Sebring Jx, 1984 F150, 1970 Cougar, 2013 XT250, 2010 Vstar, 2014 CTX1300
Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Yannick] #4761431
05/18/18 09:21 PM
05/18/18 09:21 PM
Joined: Jul 2016
Posts: 1,479
Jacksonville, FL
FlyNavyP3 Offline
FlyNavyP3  Offline
Joined: Jul 2016
Posts: 1,479
Jacksonville, FL
My last UOA on my 4Runner with Rotella T4 10w30 in CK-4 spec looks pretty darn similar to the old SM spec. It's boxed and labeled as CJ-4 /SM but in the new bottle and confirmed by shell rep on here that the new bottle contains CK-4 despite the label stating CJ-4 SM. To me that says it would've also met the SM specs but the new labeling requirements force the removal of gas ratings unless the oil companies cut way down on Phosphorus and Zinc. I would continue to use the Rotella with confidence.


Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander
Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Yannick] #4761432
05/18/18 09:22 PM
05/18/18 09:22 PM
Joined: Dec 2017
Posts: 1,031
US
JLTD Offline
JLTD  Offline
Joined: Dec 2017
Posts: 1,031
US
1000 hours is similar to 60000 miles in a car; several members have switched to synthetic at much higher mileage without issue so IMO you should be fine - and will probably see a cooler running engine and perhaps fuel savings.


I'm a thickie; but a 20 has its place.

I use AMSOIL

Hers: 2008 Jeep Liberty 138k, SS 5w30/Amsoil

His: 2015 4Runner 41k, OE 5w20/Wix

Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Yannick] #4761433
05/18/18 09:22 PM
05/18/18 09:22 PM
Joined: Jul 2016
Posts: 1,479
Jacksonville, FL
FlyNavyP3 Offline
FlyNavyP3  Offline
Joined: Jul 2016
Posts: 1,479
Jacksonville, FL
As an aside with 1,000 hours I'd consider freshening up the top end on your 350. Valve job and new valve springs. They're really ugly when they break a valve spring and end up dropping a valve.


Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander
Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Yannick] #4761529
05/19/18 12:53 AM
05/19/18 12:53 AM
Joined: Sep 2014
Posts: 2,086
US-WA
Dyusik Offline
Dyusik  Offline
Joined: Sep 2014
Posts: 2,086
US-WA
The lack of API Sx means nothing, other than the fact that it does not comply with a restriction. Just keep T5 in there.


95 Cherokee 190K DELO 10W30,XG8
07 IS250 98K Napa 10w30,FULL
04 YZF-R1 19K DELO 15w40,XG7317
99 HD XL1200S 18K VR1 20w50,1515
14 RX450h 32k PP MIX,NAPAG
Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: JLTD] #4761631
05/19/18 05:56 AM
05/19/18 05:56 AM
Joined: Jul 2005
Posts: 30,415
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,415
NY
Originally Posted By: JLTD
1000 hours is similar to 60000 miles in a car; several members have switched to synthetic at much higher mileage without issue so IMO you should be fine - and will probably see a cooler running engine and perhaps fuel savings.


I could only dream about driving 60K miles in thousand hours. I seriously doubt I'd see 25K miles in that much time.

Back OT- switching won't be a problem.


God Bless Our Troops

Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Yannick] #4761704
05/19/18 07:31 AM
05/19/18 07:31 AM
Joined: Nov 2004
Posts: 428
central Georgia
terminaldegree Offline
terminaldegree  Offline
Joined: Nov 2004
Posts: 428
central Georgia
As others have mentioned, not having the SM spec is meaningless for the engine youre using. Id stay the course and keep using it. Switching is also fine, but Id rather save my money on a motor with that many hours to pay for refreshing exhaust riser gaskets, water pump impellers, stern drive gaskets, and other things that are more likely to ruin your day than the brand of motor oil.

I run Delo 400 LE 15w-40 in my Nautique. Going to try and find a couple more oil changes of older stock, just so it continues to have a steady diet of the same thing its had for the last 3 oil changes. But thats honestly #30 of the things Im actually worried about with my old boat.


'16 Mini Cooper S, 27k
'10 F150 4.6 3v, 115k
'13 Kawasaki STX-15f, 180 hr
'96 Sport Nautique 351 GT-40, 745 hr
Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: terminaldegree] #4761779
05/19/18 08:59 AM
05/19/18 08:59 AM
Joined: Dec 2016
Posts: 6,226
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,226
Waco, TX
Originally Posted By: terminaldegree
Switching is also fine, but Id rather save my money on a motor with that many hours to pay for refreshing exhaust riser gaskets, water pump impellers, stern drive gaskets, and other things that are more likely to ruin your day than the brand of motor oil.


Agreed.

It's probably time to do a THOROUGH inspection of the entire drive system.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Linctex] #4787923
06/16/18 02:44 AM
06/16/18 02:44 AM
Joined: May 2012
Posts: 5,359
Fort Lauderdale, FL
DoubleWasp Offline
DoubleWasp  Offline
Joined: May 2012
Posts: 5,359
Fort Lauderdale, FL
Originally Posted By: Linctex
Originally Posted By: terminaldegree
Switching is also fine, but Id rather save my money on a motor with that many hours to pay for refreshing exhaust riser gaskets, water pump impellers, stern drive gaskets, and other things that are more likely to ruin your day than the brand of motor oil.


Agreed.

It's probably time to do a THOROUGH inspection of the entire drive system.


If he's gone 1000 hours without doing that at least once a year, he's probably already on the cusp of apocalypse.

Unless you have a catalyzed 5.7 (doubt it), your engine isn't going to care that SM was dropped from the bottle.

Where the engine is concerned, skip the top-end job. A brand new crate engine + brass freeze plugs is less than $2000. When that top-end is done, kick the whole engine, rather than tighten the top, just to start having bottom issues.

When dealing with big blocks at $5,000+ for a crate, we bother with the top end (especially since big blocks love to get a hole ate through their heads). On a 5.7? We'll do it if someone is adamant, but pretty much nobody ever has been.

Amsoil in that engine? See above. Every oil change, throw your savings by using T5 into a jar marked "crate engine". Might be surprised how much of the job your jar will cover when the time comes.

Use some nice RA or WM dollar clearance filters, and jar that savings too.


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio
Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Yannick] #4788560
06/16/18 07:57 PM
06/16/18 07:57 PM
Joined: Mar 2004
Posts: 20,743
Upstate NY
Donald Online content
Donald  Online Content
Joined: Mar 2004
Posts: 20,743
Upstate NY
Rotella T 15W40.

How many hours do you put on the engine a year?


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: JLTD] #4792435
06/20/18 07:43 PM
06/20/18 07:43 PM
Joined: Dec 2014
Posts: 1,426
NY, USA, etc.
oilpsi2high Offline
oilpsi2high  Offline
Joined: Dec 2014
Posts: 1,426
NY, USA, etc.
Originally Posted By: JLTD
1000 hours is similar to 60000 miles in a car; several members have switched to synthetic at much higher mileage without issue so IMO you should be fine - and will probably see a cooler running engine and perhaps fuel savings.


Maybe if you floor it at every takeoff and run it at 3000RPM when cruising. Boat engines live a way harder life than a car engine. I'd say 1000 hours is closer to 120-150,000 miles.

Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Yannick] #4800346
06/29/18 07:52 AM
06/29/18 07:52 AM
Joined: Dec 2017
Posts: 2,301
SE British Columbia, Canada
Snagglefoot Offline
Snagglefoot  Offline
Joined: Dec 2017
Posts: 2,301
SE British Columbia, Canada
Originally Posted By: Yannick
Hello,
I have a Mercruiser 5.7 with around 1000hours in the heart, I always put Rotella T5 15w40, but now the API SM is over.

What do you think switching at 1000hours on full Synthetic AMSOIL 15w40 ? AM I gonna expect some leak problem ?
Should I keep going with T5 even without the API SM ?

thanks


Just curious. Do they put cats on the inboards?


If you want the job done right......do it yourself.
Re: Amsoil in a 5.7 (~1000hours) or still use T5 ? [Re: Snagglefoot] #4806388
07/06/18 12:31 AM
07/06/18 12:31 AM
Joined: May 2012
Posts: 5,359
Fort Lauderdale, FL
DoubleWasp Offline
DoubleWasp  Offline
Joined: May 2012
Posts: 5,359
Fort Lauderdale, FL
Originally Posted By: Snagglefoot
Originally Posted By: Yannick
Hello,
I have a Mercruiser 5.7 with around 1000hours in the heart, I always put Rotella T5 15w40, but now the API SM is over.

What do you think switching at 1000hours on full Synthetic AMSOIL 15w40 ? AM I gonna expect some leak problem ?
Should I keep going with T5 even without the API SM ?

thanks


Just curious. Do they put cats on the inboards?



They do on the most recent ones, and yes, they do use a special oil just for catalyzed engines.


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio

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