Switch to High Mileage?

[turbo79]

So, I use Castrol Full Synthetic 10-30. I drive in Oregon, which does not get a lot of freezing.

Where does that leave me, oil mavens?

 

[sdpatt]

Castrol GTX 10W-30 High Mileage works for my SHO and has been doing it since around 200,000 miles. I figure she's earned the "good stuff." Before that I used Castrol GTX 10W-30. The engine's internals are still immaculate. I am a strong believer in the use of high quality motor oils and believe that Castrol is near the head of the pack. The SHO will be passing 400,000 miles around Wednesday of next week. Right now, there is no end in sight.

Long live the SHO!

 

[DJSHO91]

I've always run Castrol GTX 10w30 in my 91' SHO. At almost 215k miles, she is still running sweet and clean. From what I've gleaned about the "Hi-Mileage" brand, it includes additives to help swell up gasket materials and reduce oil burning and leakage(is it true or simply a sales promotion). My concerns are how this might effect some of the tight tolerance areas in the SHO construction, so I'm sticking with the GTX original formula. It's always been one of the best and still is in my book. If it ain't broke don't fix it!

 

[sholover719]

I've always run Castrol GTX 10w30 in my 91' SHO. At almost 215k miles, she is still running sweet and clean. From what I've gleaned about the "Hi-Mileage" brand, it includes additives to help swell up gasket materials and reduce oil burning and leakage(is it true or simply a sales promotion). My concerns are how this might effect some of the tight tolerance areas in the SHO construction, so I'm sticking with the GTX original formula. It's always been one of the best and still is in my book. If it ain't broke don't fix it!

actually the real motto for myself would be if it aint broke fix it till it is and onces its broke, fix it again.

 

[gsilva]

The thing I did a lousy job of explaining above is that if you used Amsoil from the start or close to it you would not need a "High Mileage oil" because you would not have the problems that your trying to fix with that "high mileage oil". Amsoil reduces wear by as much 80% and this has been proven over the 37 years that Amsoil has been on the market.

 

[sholover719]

The thing I did a lousy job of explaining above is that if you used Amsoil from the start or close to it you would not need a "High Mileage oil" because you would not have the problems that your trying to fix with that "high mileage oil". Amsoil reduces wear by as much 80% and this has been proven over the 37 years that Amsoil has been on the market.

i live in central va, and ive looked and looked and looked at wal mart advance autozone and napa and cant seem to find this amsoil that you all are talken about that you say is soo good, sounds like i should probably try it sence my sho is creeping over to 156,000 miles today on original rod bearings and everything.

 

[Brett]

Me and my pops are actually amsoil dealers . He Broke his back awhile back and has been doing small engine repair as a hobby and to make some extra money on the side. I can't vouch for the oil formulated for cars/trucks. But the 2 stroke oil, and most other products i have used are second to none.

 

[gsilva]

i live in central va, and ive looked and looked and looked at wal mart advance autozone and napa and cant seem to find this amsoil that you all are talken about that you say is soo good, sounds like i should probably try it sence my sho is creeping over to 156,000 miles today on original rod bearings and everything.

My SHO has 183K and I don't think it ever even had a 60K. You wouldn't find Amsoil at Wal-Mart and a lot of other places like that. Go to Amsoil.com and type in your zip code and you will find a dealer close to you. There's a place that Say's "to find a dealer near you" I think it's in the upper right of the web page. I have 12 years and hundreds of thousands of miles experience with it so any questions you have let me know.
I working on the front 60K right now.
P.S. You can order it on line and UPS will bring it to your house or any place you want it. No more looking.
P.S. #2 theres a Amsoil warehouse in Richmond, VA.

 

[gsilva]

Me and my pops are actually amsoil dealers . He Broke his back awhile back and has been doing small engine repair as a hobby and to make some extra money on the side. I can't vouch for the oil formulated for cars/trucks. But the 2 stroke oil, and most other products i have used are second to none.

I can vouch for it in cars and trucks. It's also in my weed eaters and lawn mowers

 

[RonPorter]

I've always run Castrol GTX 10w30 in my 91' SHO. At almost 215k miles, she is still running sweet and clean. From what I've gleaned about the "Hi-Mileage" brand, it includes additives to help swell up gasket materials and reduce oil burning and leakage(is it true or simply a sales promotion). My concerns are how this might effect some of the tight tolerance areas in the SHO construction, so I'm sticking with the GTX original formula. It's always been one of the best and still is in my book. If it ain't broke don't fix it!

No, that's true. High-mileage oil just contains more of the addititve that softens up the seals.

As I posted earlier, rather than go with the (now expensive) high-mileage oil, you can buy seal additive at all of the usual parts stores. Cheaper to add a quart during a regular oil change than to buy all high-mileage oil.

 

[RonPorter]

The thing I did a lousy job of explaining above is that if you used Amsoil from the start or close to it you would not need a "High Mileage oil" because you would not have the problems that your trying to fix with that "high mileage oil". Amsoil reduces wear by as much 80% and this has been proven over the 37 years that Amsoil has been on the market.

BULLSHYTE!!

Amsoil is overpriced MLM oil. And will have ZERO effect on drying-up main and valve seals.

Seals that are drying up have NOTHING to do with wear in the engine. Amsoil's claims show that it's no better than any other synth oil, they just come up with more BS studies to justify it's inflated price.

Just like what Amway does to justify it's inflated MLM prices .

 

[gsilva]

BULLSHYTE!!

Amsoil is overpriced MLM oil. And will have ZERO effect on drying-up main and valve seals.

Seals that are drying up have NOTHING to do with wear in the engine. Amsoil's claims show that it's no better than any other synth oil, they just come up with more BS studies to justify it's inflated price.

Just like what Amway does to justify it's inflated MLM prices .

Wrong

 

[RonPorter]

Wrong

OK, just go and drink more Amsoil Kool-Aid.

This discussion has been ongoing for the last 20 years and these lists, and either (1) you are a believer in the Amsoil religion as you are, or (2) you think it's a buncha crap, as I and most others do.

I already have proof over 10 years and over180K that normal dino oil works fine in a one-owner, driven very-hard SHO. Amsoil has no proof that it can do better------which it can't. It just costs way too much to cover the MLM costs.

We've been having this discussion for YEARS with the Amsoil Kool-Aid drinkers. If you like it buy it and waste your $$$. The rest of us will do fine and save money with reasonably-priced oil.

 

[gsilva]

OK, just go and drink more Amsoil Kool-Aid.

This discussion has been ongoing for the last 20 years and these lists, and either (1) you are a believer in the Amsoil religion as you are, or (2) you think it's a buncha crap, as I and most others do.

I already have proof over 10 years and over180K that normal dino oil works fine in a one-owner, driven very-hard SHO. Amsoil has no proof that it can do better------which it can't. It just costs way too much to cover the MLM costs.

We've been having this discussion for YEARS with the Amsoil Kool-Aid drinkers. If you like it buy it and waste your $$$. The rest of us will do fine and save money with reasonably-priced oil.

To bad you didn't learn anything.

 

[RonPorter]

Folks, I'm sorry that this thread was highjacked by a Kool-Aid-drinking Amsoil dealer.

This has NOTHING to do with high-mileage oil, nor the problems that it will correct.

As I mentioned earlier, you can use high-mileage oil if you have crank seal and/or valve seal leakage, and it will correct it.

My issue is that high-mileage oil used to cost <$.50 more than regular oil, now it it getting too expensive, being priced between regular dino and synth.

You can buy seal sweller additive for $2-4 at most parts houses. Use it along with dino oil, and you will get more seal-swelling benefits than buying high-mileage oil.

And Amsoil doesn't do squat for high-mileages, it just sucks more $$$ from your pocket.

 

[SHOtime2511]

my local wally world has GTX at 12.50 and "high mileage" at 14.50 for five qts.
only problem is that there selection of oil filters is lacking,although with the SHO thats not a problem as they carry Motorcraft.

 

[TYSHO]

Castrol GTX 10W-30 High Mileage works for my SHO and has been doing it since around 200,000 miles. I figure she's earned the "good stuff." Before that I used Castrol GTX 10W-30. The engine's internals are still immaculate. I am a strong believer in the use of high quality motor oils and believe that Castrol is near the head of the pack. The SHO will be passing 400,000 miles around Wednesday of next week. Right now, there is no end in sight.

Long live the SHO!

And why was your reason for switching over to the high milage, Scott? I specifically remember your SHO puffing out smoke from the rear end on one of the fun runs years back.

 

[turbo79]

No, that's true. High-mileage oil just contains more of the addititve that softens up the seals.

As I posted earlier, rather than go with the (now expensive) high-mileage oil, you can buy seal additive at all of the usual parts stores. Cheaper to add a quart during a regular oil change than to buy all high-mileage oil.

Can you recommend (or even note) any seal additive brands?

 

[RonPorter]

Can you recommend (or even note) any seal additive brands?

I used a truly scientific method. Since none of the ones at AutoZone were familiar to me, I picked the cheapest one!!

Worked fine, gave me another ~500 to a quart on the truck.

 

[Bob Gervais]

I used a truly scientific method. Since none of the ones at AutoZone were familiar to me, I picked the cheapest one!!

Worked fine, gave me another ~500 to a quart on the truck.

A teaspoon of brake fluid added to the oil will do the trick.

And, I'd have to agree on the Amsoil comments Ron, in regards to "fixing" dried up seals and gaskets. AFAIK, Amsoil doesn't make a product that will do that, like some of the high mileage engine oils normally available.