does supertech HM condition seals

[61uxdn80]

How much at205 did u put in 03 Toyota? Do u have exact quantity per oil capacity? I have a leaky 14 Venza V6 rear main seal.

8 oz bottle treats 6 quarts. hope that helps

 

[melk]

My 99 Ford 5.4 2v is the only engine I have that leaks. I put one bottle of AT205 in when I first bought it a couple years back and I guess another wouldn’t hurt. I took it back over from my son who I was loaning it to as his daily for a while, short tripping it to death So now at least I’ll be able to monitor things a lot more closely. It’s on Valvoline Restore and Protect 5w30 and about due for another change (183k)

 

[50yr Street Mech]

Noticed when I used the AT-205 in my 1997 / 5hp Tecumseh, ( with the leaky rear seal), this stuff tends to burn off as white smoke coming out of the breather. Don't know if the sealing properties are burning off, but it has not started leaking again. With that observation, I dump a bottle of AT-205 in my 03' Solara 4 banger, with the valve stem issues , every other oil change just to play it safe. Still no puff of blue smoke on cold start. Good thing, just put CARB cats in the car. Don't want to ruin those so quickly. Friggin NY and their California emissions !!!!! Ridiculous.

 

[MolaKule]

I don't know if that has been covered so I may be a day late and a dollar short asking this question. But does anyone know if the Supertech High Mileage oils have as strong of a seal conditioner as any of the name brand stuff? I have had good luck with Maxlife stopping weeping seals on old trucks and I'm curious if the Supertech High Mileage stuff competes as well in the seal swelling area? As an oil running modest oil change intervals I trust supertech and know its a quality product. I'm focusing just on the seal conditioners. Any advice would be helpful. Thanks

All pcmo and hdeo engine oils have seal swell chemistry.

 

[61uxdn80]

All pcmo and hdeo engine oils have seal swell chemistry.

Do High Mileage oils have additional seal swelling higher than that of all other oils?

 

[wlk]

Thanks for the replies. I have a 1993 Chevy K1500 that will bead a little oil on the bell housing. High mileage oil usually takes care of it but with prices going up on everything I thought about going supertech or another warren blended HM. I just was interested in how effective it was. But honestly walmart isn't keeping their supertech brand prices low enough IMO. Not enough to pull people away from the top brands.

Run a 10w40 HM in it, I am partial to QS All Mileage, Maxlife, and Castrol GTX HM, that's what I run in my '93 5.7l C1500. Or as others have suggested LM Motor Oil Saver and a 40grade of your choice. I have never had any Mobil 1 High Mileage oils resolve a leak myself, so I would not use them personally. Never used ST long enough to weight in on them with seals but I would try them.

 

[61uxdn80]

Run a 10w40 HM in it, I am partial to QS All Mileage, Maxlife, and Castrol GTX HM, that's what I run in my '93 5.7l C1500. Or as others have suggested LM Motor Oil Saver and a 40grade of your choice. I have never had any Mobil 1 High Mileage oils resolve a leak myself, so I would not use them personally. Never used ST long enough to weight in on them with seals but I would try them.

Thank you. Its got 10w40 in it now full syth and motor oil saver and its stopped. Probably the 40 weight and motor oil saver helping more so than the built in conditioners.

 

[danjak26]

I don't know if that has been covered so I may be a day late and a dollar short asking this question. But does anyone know if the supertech High Mileage oils have as strong of a seal conditioner as any of the name brand stuff? I have had good luck with Maxlife stopping weeping seals on old trucks and I'm curious if the supertech High Mileage stuff competes as well in the seal swelling area? As an oil running modest oil change intervals I trust supertech and know its a quality product. I'm focusing just on the seal conditioners. Any advice would be helpful. Thanks

High Mileage oils won’t really fix leaks they more work to prevent them which is why I like to use them. My old 09 Mitsubishi galant with the 2.4L 4 cyl, I got it in 2022 with 89k miles and it had no leaks, I drove that car for about 2 years before a lady rear ended me and totaled it. When it got rear ended it had almost 138k miles and I ran Supertech Full Synthetic High Mileage 5w-20 almost exclusively. That car never even had a seal weep anything. The engine was completely dry. Now after that got totaled, bought a 2010 camry, 2.5L 4cyl. Ran high mileage oil through it almost exclusively but I decided to run Pennzoil ultra platinum through it and used it for about 10-15k miles. In that time the rear main seal started leaking. Car had about 170k at that time. Now it’s all possible that the leak could’ve started even if I was using a high mileage oil at that time but from my experiences, I just don’t think it would’ve. I switched back to high mileage oil after that and it may have slowed it down a tiny bit but never stopped the leak. So if you really want to help prevent engine oil leaks, I would personally switch to it sooner than later but as they say to each their own.

 

[Mainia]

Look at oxidation values, I think Mobil 1 Extended Performance High Mileage was actually one of the better ones but has lower hths then say Valvoline Extended Protection High Mileage which had a very slightly lower sealer value but higher hths.
You could try whatever high mileage oil you like and add a pint of Schaeffer's Moly EP 132 and that might keep in from getting out, or a non High Mileage with Liquimoly Motor Oil Saver every 20ish thousand miles.

I had bad luck with Mobil 1 High Mileage as it did not work. It took Pennzoil High Mileage to seal back up the leak from my daughter now dead (head gasket) Civic.

 

[Mainia]

High Mileage oils won’t really fix leaks they more work to prevent them which is why I like to use them. My old 09 Mitsubishi galant with the 2.4L 4 cyl, I got it in 2022 with 89k miles and it had no leaks, I drove that car for about 2 years before a lady rear ended me and totaled it. When it got rear ended it had almost 138k miles and I ran Supertech Full Synthetic High Mileage 5w-20 almost exclusively. That car never even had a seal weep anything. The engine was completely dry. Now after that got totaled, bought a 2010 camry, 2.5L 4cyl. Ran high mileage oil through it almost exclusively but I decided to run Pennzoil ultra platinum through it and used it for about 10-15k miles. In that time the rear main seal started leaking. Car had about 170k at that time. Now it’s all possible that the leak could’ve started even if I was using a high mileage oil at that time but from my experiences, I just don’t think it would’ve. I switched back to high mileage oil after that and it may have slowed it down a tiny bit but never stopped the leak. So if you really want to help prevent engine oil leaks, I would personally switch to it sooner than later but as they say to each their own.

I disagree, my daughter Civic was a leaker, Mobil 1 High Mileage did not fix it. But Pennzoil Platinum High Mileage did.

 

[53' Stude]

I don't know if that has been covered so I may be a day late and a dollar short asking this question. But does anyone know if the supertech High Mileage oils have as strong of a seal conditioner as any of the name brand stuff? I have had good luck with Maxlife stopping weeping seals on old trucks and I'm curious if the supertech High Mileage stuff competes as well in the seal swelling area? As an oil running modest oil change intervals I trust supertech and know its a quality product. I'm focusing just on the seal conditioners. Any advice would be helpful. Thanks

Slow week at BITOG I see.

Use with confidence.

 

[cheesepuffs2]

I disagree, my daughter Civic was a leaker, Mobil 1 High Mileage did not fix it. But Pennzoil Platinum High Mileage did.

He’s saying Pennzoil Ultra Platinum not Platinum High Mileage.