synthetic and leaks

[dave1251]

Alex I am not following your anger.

 

[fred]

i drive a truck with a n14 cummins, it has allways had conventional oil in it. a week ago we fixed a seal that was letting 1 gallon of oil leak out every 800 miles.this leak never was a small leak,it went from no leak to leaking a gallon in one trip. so this means the conventional oil must have caused the seal to go bad. synthetic oils do not cause oil leakes, bad seales do.

 

[TheTanSedan]

quote:

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Originally posted by JohnBrowning:
If any low milage car develops leaks with synthetic that means that the OEM used the cheapest low grade junk gasketmaterial available on the earth! I have never had a gasket leak due to the oil used and I have been useing synthetic since about the late 1980's!

If a high milage vechiles develops leaks shortly after switching to synthetic that means that the seal was brittle and dry roted from over extended OCI's with conventional oil!

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Dead on correct.

I've been running synthetic since 1982. Have changed 5 or six cars. Was never the original owner (except on 7th). Some of these engines were more than 25-years old, most had over 100,000 miles. The use of synthetic kept them cleaner & internal oil consumption never increased afterwards. (Wish I could have had ARX way back when).

ARX it, etc. Then just fix the failed seal and quit whining. Even the Class 8 diesels I drove had failed seals from time to time. It's just a repair, sheesh.

 

[Alex P.]

quote:

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Originally posted by dave1251:
Alex I am not following your anger.

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No anger, just mild irritation and some sarcasm used to drive a point. The thread went around in circles for long enough. How can you say that synthetic did not cause the damage, and yet caused the leak? On the same token, I don't agree with those that say that synthetic won't leak in a car that didn't leak dino - it can. But why? The best statement I found while reading the thread over was Ace's which I quoted above. Synthetics leak better, and some better than others.

 

[Fernando R]

My experience in this issue is so old it may no longer be relevant. In the early 80s I went with Delvac 1 in an Audi 5000 with the old 5 cylinder engine. Soon after the oil consumption increased to about 1 qt/ 400 miles at 40,000 miles. The valve stem seals were replaced and consumption finally decreased. That engine was notorious for seal trouble but nevertheless, it left me with a reluctance to use the Mobil PAO oils again.

 

[LubeOiler]

If any low milage car develops leaks with synthetic that means that the OEM used the cheapest low grade junk gasketmaterial available on the earth! I have never had a gasket leak due to the oil used and I have been useing synthetic since about the late 1980's!
I mean, seriously, if synthetic oil was so good at instantly dissolving crud, why is it so commonly said that Auto-RX works and even Redline can't really clean like that? These are Quotes made here, If seals are made to be used with petroleum oil to avoid leaks then Car Companys need to adjust the seals to last with synthetic oil. I am sure there are good and better seals they can use.But why would they if most seals don't leak till the car is off warrenty anyway.Without getting off the subject this I feel is a good comparision. When the Hurricane blew most of my roof off the roofing company put what was barely acceptable for my county code. The code is much stricter in Dade county. So I looked at the roof cap that they use and it can allow as much as 290 inches of rain in and still pass inspection. They have other vents that allow 0 rain in even at 100mph winds.So if we could tell Nissan to give us lifetime seals I bet they could. Look at Belts Lifetime also. I feel every car leaks if your lucky then