Recent Topics
Moog wheel bearing and knuckle assy
by Imp4 - 02/16/20 07:37 PM
Daytona 500 engine related question
by OilUzer - 02/16/20 07:37 PM
2006 Subaru Forester 2.5 NA
by 762fermeandyou - 02/16/20 07:29 PM
DIY Paintless Dent Removal....
by dblshock - 02/16/20 07:17 PM
Bad sports teams
by 53' Stude - 02/16/20 06:42 PM
Valvoline 20W-50 Baja 1000 Race oil
by kstanf150 - 02/16/20 06:21 PM
How to stand on the roof of a Saturn Vue?
by atikovi - 02/16/20 06:09 PM
Spliceline wire connectors
by Donald - 02/16/20 05:22 PM
Found a few clearance oils at AZ today
by PantherFan88 - 02/16/20 04:55 PM
NASCAR electric
by CourierDriver - 02/16/20 04:52 PM
Valvoline Modern Engine vs Regular synthetic?
by PantherFan88 - 02/16/20 04:50 PM
Converting 1970 396 to Fuel Injection
by 007 - 02/16/20 04:47 PM
2016 frontier.
by red7404 - 02/16/20 04:34 PM
Ruger .22 SA - not a good show
by JHZR2 - 02/16/20 03:48 PM
engine maintenance Jaguar
by jssaab - 02/16/20 03:02 PM
New TSC clearance
by Greg L - 02/16/20 02:58 PM
Castrol Edge 5w20 and 5w30 Costco
by nlife - 02/16/20 02:41 PM
Generator Hour Meter
by spasm3 - 02/16/20 01:44 PM
Newest Members
Clifton, JohnEmm, Fastvette, Geode, rob1715
70716 Registered Users
Who's Online Now
112 registered members (4WD, 5AcresAndAFool, 53' Stude, 762fermeandyou, 2009Caraman, 14 invisible), 2,291 guests, and 47 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics301,541
Posts5,197,547
Members70,716
Most Online4,538
Jan 20th, 2020
Donate to BITOG
Print Thread
Hop To
Page 1 of 2 1 2
Here's a good Question... #3849840 09/10/15 09:43 PM
Joined: Oct 2014
Posts: 96
R
Rockrz Offline OP
OP Offline
R
Joined: Oct 2014
Posts: 96
I know someone that has an older vehicle with about 170k on it that runs perfectly. Plugs are dry when pulled and inspected and the engine (GM) has plenty of power so it makes no sense to do a reman engine really at this point.

But, the rear main has recently started to leak a little. They change the oil every 5k and have to add a quart every 3k or so. They have been running Amsoil (since about 75k) like I do on mine and the thought has come up that maybe the Amsoil is so clean that it contributed to the seepage.

So, I think they are going to try some Bar's Leak or something similar to see if that helps the rear main to stop leaking.

So, what's the general consensus on continuing to use Amsoil in this situation?

Think it would be better to keep using it, or switch to a conventional oil?
Just curious what the local oil experts here on the board recommend.

Re: Here's a good Question... [Re: Rockrz] #3849848 09/10/15 09:52 PM
Joined: Aug 2013
Posts: 3,839
H
HangFire Offline
Offline
H
Joined: Aug 2013
Posts: 3,839
Try a high mileage oil. Stay away from Bar's Leak.


Various musings: http://hangfire.net
Re: Here's a good Question... [Re: Rockrz] #3849850 09/10/15 09:53 PM
Joined: Sep 2013
Posts: 11,670
D
dlundblad Online Happy
Online Happy
D
Joined: Sep 2013
Posts: 11,670
Personally, I would ditch the additive and use a high mileage oil.

Mobil 1 HM or Pennzoil HM would be my personal choices. Others here have had great experience with Valvoline Maxlife blend.


03 Jeep WJ 4.0 202k Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 195k M1 0w40 Mahle OX149D
97 Chvy Blazer 4.3 158k M1 EP 10w30 Supertech ST3980

Re: Here's a good Question... [Re: Rockrz] #3849865 09/10/15 10:05 PM
Joined: Oct 2014
Posts: 96
R
Rockrz Offline OP
OP Offline
R
Joined: Oct 2014
Posts: 96
I've talked to a few folks over the years that claim to have had good results using Bar's Leak. Isn't this stuff supposed to swell the seals a little?

Isn't Mobil 1 high Mileage still using a synthetic?

It's a V6 so what would work best, an 10W30?





.

Last edited by Rockrz; 09/10/15 10:10 PM.
Re: Here's a good Question... [Re: Rockrz] #3849872 09/10/15 10:13 PM
Joined: Oct 2014
Posts: 14,464
C
CT8 Offline
Offline
C
Joined: Oct 2014
Posts: 14,464
5,000 miles with Amsoil?


2015 F150 2.7
2018 F350 6.2
Re: Here's a good Question... [Re: Rockrz] #3849876 09/10/15 10:17 PM
Joined: Oct 2011
Posts: 3,132
B
Brybo86 Offline
Offline
B
Joined: Oct 2011
Posts: 3,132
Which car and engine, is it difficult to just change the rear seal?


12 Honda Odyssey 112k
09 Kymco Super8
08 Honda Accord 2.4L 164k
01 Kymco People 50
95 Yamaha Jog
Re: Here's a good Question... [Re: Rockrz] #3849880 09/10/15 10:19 PM
Joined: Oct 2014
Posts: 96
R
Rockrz Offline OP
OP Offline
R
Joined: Oct 2014
Posts: 96
They say the transmission needs to be removed in order to do a rear main seal which is going to cost a lot.

Re: Here's a good Question... [Re: Rockrz] #3849916 09/10/15 10:59 PM
Joined: Dec 2010
Posts: 876
R
ryanschillinger Offline
Offline
R
Joined: Dec 2010
Posts: 876
Try a high mileage oil for a couple OCI and see if it reduces or stops the leak. The problem isn't that the oil is synthetic, but he seal might have shrunk some over time. High mileage oil has conditioners that help keep seals working. My old Camry had 307k when I sold it. It had several very minor oil leaks. I used some Mobil HM oil for 2 consecutive oil changes and it very noticeably reduced the amount of oil used between changes.


2017 Subaru Forester
2014 Toyota Prius V
1969 Ford LTD
2014 Honda CB1100
Re: Here's a good Question... [Re: Rockrz] #3849921 09/10/15 11:04 PM
Joined: Jul 2015
Posts: 1,025
B
Branson304 Offline
Offline
B
Joined: Jul 2015
Posts: 1,025
Since the oil leak is fairly minor, I'd suggest switching to a high mileage oil. High mileage oils have special additives to recondition & swell the oil seals & gaskets in the motor. I'd suggest Valvoline MaxLife Synthetic Blend. Mobil 1 Full Synthetic High Mileage is my second pick. Valvoline also makes a MaxLife full synthetic but it's extremely difficult to find in my area. Anyway, these oils will help reduce the oil leak and maybe even stop it completely after while.

I don't suggest using any additives like Bar's Leaks. I don't figure it would do any harm, but a good high mileage oil would be best in my opinion.

Re: Here's a good Question... [Re: Rockrz] #3849924 09/10/15 11:07 PM
Joined: Oct 2014
Posts: 96
R
Rockrz Offline OP
OP Offline
R
Joined: Oct 2014
Posts: 96
OK, so apparently the high mileage oil contains additives that conditions the seals right?

Seems like they could use the Amsoil and just dump some additive in.

Question is, what additive does Mobil 1 put in their oil?

Do they sell a stand alone additive?

And, what would be wrong with using Castrol GTX High- Mileage?
Lots of folks like Caster oil



.

Last edited by Rockrz; 09/10/15 11:12 PM.
Re: Here's a good Question... [Re: Rockrz] #3849929 09/10/15 11:28 PM
Joined: Oct 2014
Posts: 96
R
Rockrz Offline OP
OP Offline
R
Joined: Oct 2014
Posts: 96
Doesn't Amsoil make a high mileage oil that has special additive to condition seals?

Re: Here's a good Question... [Re: CT8] #3850009 09/11/15 04:33 AM
Joined: Oct 2005
Posts: 7,094
K
Kuato Offline
Offline
K
Joined: Oct 2005
Posts: 7,094
Originally Posted By: CT8
5,000 miles with Amsoil?


Right! Unless it is a short tripper the oilcould go much further, even if it is not SS.

As far as the seal, 1 quart in 3000 miles isn't much so just drive it....get the seal fixed if it is worrisome, but adding something to clog the leaky seal only masks the problem and won't cure it. A HM oil might fix it but if it doesn't he is right back where he started as well as having switched away from his chosen oil.


Thick vs Thin test: 15k / 43k miles complete
Re: Here's a good Question... [Re: Kuato] #3850156 09/11/15 07:44 AM
Joined: Nov 2013
Posts: 379
Z
zuluplus30 Offline
Offline
Z
Joined: Nov 2013
Posts: 379
Seals wear out. Plain and simple. Amsoil or conventional, it's just going to happen at some point. I do agree 1q every 3k is minimal and echo the HM oil recommendations.

Re: Here's a good Question... [Re: Rockrz] #3850160 09/11/15 07:46 AM
Joined: Aug 2011
Posts: 9,560
H
HerrStig Offline
Offline
H
Joined: Aug 2011
Posts: 9,560
Check the PCV system.

Re: Here's a good Question... [Re: Rockrz] #3850623 09/11/15 02:35 PM
Joined: Oct 2011
Posts: 3,132
B
Brybo86 Offline
Offline
B
Joined: Oct 2011
Posts: 3,132
Originally Posted By: Rockrz
They say the transmission needs to be removed in order to do a rear main seal which is going to cost a lot.


Once again please

Year, make , model and engine


12 Honda Odyssey 112k
09 Kymco Super8
08 Honda Accord 2.4L 164k
01 Kymco People 50
95 Yamaha Jog
Page 1 of 2 1 2
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™