Is going back to dino after synthetic bad???

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I just read a post on here and they mentioned that going back to conventional oil after using a synthetic is bad for the engine. I remember when synthetic came out there were problems putting synthetic in older engines due to oil leakage, but I have never heard that going back to conventional oil will cause any problems as long as the engine was originally speced with regular oil. Any insights???
 
Originally Posted By: firetech
I just read a post on here and they mentioned that going back to conventional oil after using a synthetic is bad for the engine. I remember when synthetic came out there were problems putting synthetic in older engines due to oil leakage, but I have never heard that going back to conventional oil will cause any problems as long as the engine was originally speced with regular oil. Any insights???


Where did you read such stuff? Probably just an uninformed poster. This is the internet. There is no problem switching......I just told another guy the same thing, was that the one you read?
 
Originally Posted By: firetech
I just read a post on here and they mentioned that going back to conventional oil after using a synthetic is bad for the engine. I remember when synthetic came out there were problems putting synthetic in older engines due to oil leakage, but I have never heard that going back to conventional oil will cause any problems as long as the engine was originally speced with regular oil. Any insights???


Unsubstantiated observations and hearsays.

Q.
 
No longer true.

Was true 15+ years ago. I switched back to dino from syn on a 1.8L '90 subaru with under 36000 miles on it back around... 92-93? Had to replace both cam and one crank seal within 3000 miles of switching back. Leak was the 1-2 drips every evening per seal.

Fortunately, I had no clue it was my fault, and the car was under warranty. Dealer replaced all 3.

M
 
I was originally dino and then switched to synthetic for over a year and now am back to dino and very happy with it. No problems at all and my cars seem to like the dino best.
 
Absolutely will not hurt a thing. You have no idea how many times I`ve done it. I`m on dino now (was on synthetic) and may grab some lighter 40wt synthetic for my winter fill in case it gets cold here,seeing we had such a mild summer. Depends on my mood when I get around to heading to the oil store.

Like coffee said,my car seems to like dino better as well.
 
Actually I read it on this site in another recently posted message, probably the same one. Something about "My unsubstantiated observations..." Didn't sound right to me so I thought I'd ask, I've been in this trade along time and heard alot of things, my guess is it rolled off the lips of a synthetic oil salesman somewhere and grew from there!!!
 
Your hair will turn gray or fall out, your belt will become too small, your teeth will rot, you will become forgetful.

Your car, on the other hand, will still run. The mileage may drop a bit, your change interval will likely shorten, the engine may run hotter, you won't have the protection in case of problems, if you are in extremely cold climate the winter starts may be slower.
 
Originally Posted By: **** in Falls Church
Your hair will turn gray or fall out, your belt will become too small, your teeth will rot, you will become forgetful.

Your car, on the other hand, will still run. The mileage may drop a bit, your change interval will likely shorten, the engine may run hotter, you won't have the protection in case of problems, if you are in extremely cold climate the winter starts may be slower.


Real world view in my opinion. I agree with this 100%!
 
Originally Posted By: **** in Falls Church
Your hair will turn gray or fall out, your belt will become too small, your teeth will rot, you will become forgetful.

Your car, on the other hand, will still run. The mileage may drop a bit, your change interval will likely shorten, the engine may run hotter, you won't have the protection in case of problems, if you are in extremely cold climate the winter starts may be slower.
Most likley you will not notice a bit of difference there will not be any extra protection if something happens I know better and I agree on the cold starting depending upon how cold it gets.
 
Originally Posted By: **** in Falls Church
Your hair will turn gray or fall out, your belt will become too small, your teeth will rot, you will become forgetful.

Your car, on the other hand, will still run. The mileage may drop a bit, your change interval will likely shorten, the engine may run hotter, you won't have the protection in case of problems, if you are in extremely cold climate the winter starts may be slower.


You got all the talking points in!
thumbsup2.gif


Notice the word MAY.... (And if anyone thinks that you can go ahead and blow a hose or head gasket and syn will allow you to continue to drive away, please don't believe that.)

If you have problems, SHUT the engine OFF and call for help. Do NOT continue operating with ANY oil.

I've gone back and forth with conventional and syn in many motors and all is fine. MPG did not change, engine ran the same temps (using scan gauge / accurate Autometer mechanical gauges) no matter what type/brand of oil I used.

Take care, bill
 
"Most likley you will not notice a bit of difference there will not be any extra protection if something happens I know better and I agree on the cold starting depending upon how cold it gets.:

Fly a kite. I lost my radiator fluid and drove at least 10+ miles with no fluid on a mishap in stop and go traffic which lasted 1.5 hours. No engine damage and the oil was the Amsoil TSO 0w-30.

No dino for me...I know better!
 
Originally Posted By: Mamala Bay
"Most likley you will not notice a bit of difference there will not be any extra protection if something happens I know better and I agree on the cold starting depending upon how cold it gets.:

Fly a kite. I lost my radiator fluid and drove at least 10+ miles with no fluid on a mishap in stop and go traffic which lasted 1.5 hours. No engine damage and the oil was the Amsoil TSO 0w-30.

No dino for me...I know better!


My sister lost her water pump then a hose and drove for miles to find a safe place in her 1993 Caravan. No damage and she was running conventional. And her engine has more than 200k on it.

I would not recommend doing this as it could trash the motor. But she felt that since the car is old and has plenty of miles, she was going to get to a place where it was safe in her opinion.

She lives up in Montana right near the Canada boarder where it gets *very* cold.

Driving 1.5 hours on no coolant? Tell me your car, year and engine.

Bill
 
Last edited:
Originally Posted By: firetech
I just read a post on here and they mentioned that going back to conventional oil after using a synthetic is bad for the engine. I remember when synthetic came out there were problems putting synthetic in older engines due to oil leakage, but I have never heard that going back to conventional oil will cause any problems as long as the engine was originally speced with regular oil. Any insights???


Written possibly by clueless newbies that still have a lot to learn.

I've been back and forth between conventional and synthetic so many times that I've lost count. The engine wouldn't still be running at 225K miles if any of that nonesene were true. Remember : conventional or synth, it's still just oil
 
Originally Posted By: Bill in Utah
Originally Posted By: Mamala Bay
"Most likley you will not notice a bit of difference there will not be any extra protection if something happens I know better and I agree on the cold starting depending upon how cold it gets.:

Fly a kite. I lost my radiator fluid and drove at least 10+ miles with no fluid on a mishap in stop and go traffic which lasted 1.5 hours. No engine damage and the oil was the Amsoil TSO 0w-30.

No dino for me...I know better!


My sister lost her water pump then a hose and drove for miles to find a safe place in her 1993 Caravan. No damage and she was running conventional. And her engine has more than 200k on it.

I would not recommend doing this as it could trash the motor. But she felt that since the car is old and has plenty of miles, she was going to get to a place where it was safe in her opinion.

She lives up in Montana right near the Canada boarder where it gets *very* cold.

Driving 1.5 hours on no coolant? Tell me your car, year and engine.

Bill



Vehicle was a 97 Ranger 3.0 the original Amsoil TSO 0w-30. I faulted myself as I was distracted from an accident and decided to take the city route as the freeway was shutdown. I heard a pop, radiator cap blew, bad fit as I was flushing my radiator with water. Why I didn't pull over to check I don't know but maybe because there was no room it was hectic. This was 3 miles when it happened. Stuck in crawl movement I broke free with freeway speed the last 5 miles. Distant is 17 miles.

It happened .... oil was cool to the touch and engine wasn't heated at all. Temp was about 85 F.
 
Iron heads and Iron block. You were lucky. As was my sister. Type of oil did not matter in both cases.

I still stand with that NO ONE should depend on their oil to protect when you loose coolant. Esp with AL motors.

Stop the engine and get it fixed.

Take care, bill
 
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