synthetic oil....or not?

Drowzysleeper · Post by **Drowzysleeper** » Tue Jul 17, 2007 5:28 pm

i have also heard that when you start running synthetic you cant go back to the regular, is that true?

mike93hatch · Post by **mike93hatch** » Tue Jul 17, 2007 5:37 pm

Drowzysleeper;55538 wrote:i have also heard that when you start running synthetic you cant go back to the regular, is that true?

no that is 100% false.

Drowzysleeper · Post by **Drowzysleeper** » Tue Jul 17, 2007 5:41 pm

ok thats what i thought i just wanted to clear that up in my head

99PreludeSh · Post by **99PreludeSh** » Tue Jul 17, 2007 5:45 pm

mike93hatch;55540 wrote:no that is 100% false.

Can you explain please?

Spork · Post by **Spork** » Tue Jul 17, 2007 5:50 pm

Drowzysleeper;55538 wrote:i have also heard that when you start running synthetic you cant go back to the regular, is that true?

My question is: why would you want to?

mike93hatch · Post by **mike93hatch** » Tue Jul 17, 2007 6:02 pm

99preludesh;55544 wrote:Can you explain please?

man, youre on me hard! lol

here is some good reading for you.. (like i said you guys need to check out bobistheoilguy.com)
http://theoildrop.server101.com/forums/ ... Post935895

basically put..its just an old story. the saying use to be true years ago that you cannot switch back to conventional oil after using synthetic. but technology in oil is always getting better. read the whole thread i linked above for more specific reasons.

thsmrtone1 · Post by **thsmrtone1** » Tue Jul 17, 2007 7:04 pm

Drowzysleeper;55538 wrote:i have also heard that when you start running synthetic you cant go back to the regular, is that true?

mike93hatch;55540 wrote:no that is 100% false.

99preludesh;55544 wrote:Can you explain please?

ive been back and fourth 5 times and havent had a problem... i also havent heard anything about this being bad for a motor... why would it be??

99PreludeSh · Post by **99PreludeSh** » Tue Jul 17, 2007 7:42 pm

What I heard and read was that the seal-swelling characteristics of the synthetics were different from those of the mineral oils they replaced. If the seal-swell rate was lower, the seals shrank and oil leaked from crankshaft seals and rocker cover seals. If the rate was higher, the seals swelled a little extra and the engine was tight. Then if the owner changed back to mineral oil, or added a quart when no synthetic was to be had, things got really bad.

BUT LIKE I SAID THATS WHAT I HEARD AND THATS WHY I ASKED HIM TO EXPLAIN TO CLARIFY.

mike93hatch · Post by **mike93hatch** » Tue Jul 17, 2007 7:55 pm

99preludesh;55569 wrote:What I heard and read was that the seal-swelling characteristics of the synthetics were different from those of the mineral oils they replaced. If the seal-swell rate was lower, the seals shrank and oil leaked from crankshaft seals and rocker cover seals. If the rate was higher, the seals swelled a little extra and the engine was tight. Then if the owner changed back to mineral oil, or added a quart when no synthetic was to be had, things got really bad.

BUT LIKE I SAID THATS WHAT I HEARD AND THATS WHY I ASKED HIM TO EXPLAIN TO CLARIFY.

so moody.. :Poke:

to go with what you said...

http://theoildrop.server101.com/forums/ ... Post935895

"There was a time when it WAS recommended not to switch back to dino once you had run synthetics and there was a reason. Later additive work by synthetic manufactures provided an oil that did not have the propensity to cause leaks and other issues."

case closed.

JustRob · Post by **JustRob** » Tue Jul 17, 2007 8:05 pm

If all you have done to your car is a swap with bolt-ons, just get OEM non-synthetic oil. You drive a Honda, not a race car. Only about 6 out of 14 people in this thread require the use of a differnt oil other then OE recommendations.