can anybody tell me what happens to the engine when you switch back from sinthetic to regular oil?

Question

i've been told that i can harm the engine if i go back....is it truth or they just do not know,can somebody help???

Answer 1

Some engines are designed for the very low viscosity of synthetic oil. If you must switch back to regular oil, you will have a reduction in fuel economy, and the oil will have to be changed twice as often. I've never heard of a synthetic-only engine...but it wouldn't surprised me if some warranties (on the fancier brands and motors) are voided if you fail to use synthetics. Synthetic oil is better, cleaner and lasts longer...why would you want to use regular oil?

Answer 2

Nothing will happen.

Synthetics run cleaner, flow faster and lubricate better over a wider temperature range.

Changing back to petroleum based oil will simply revert to the petroleum oil's capabilities.

I seriously doubt you will experience any difference in performance or throttle response. You may experience reduced cold-starting capability as petroleum oil, even multi-vis, is thicker in cold weather than synthetic.

There are engines that require synthetic oil because the oil shares cooling duties. I've never heard of a car requiring synthetic, but the SACS Suzuki motorcycle engine requires synthetic, and the Triumph does also. Sorry I don't know which model Triumph, swiss cheese memory at work.

I have CRS, (Can't Remember Shiit)

Answer 3

I suppose there is a small possibility that switching back may do the smallest bit of damage to some various seals within your engine, but the chances of that are remote. Oil is to the mechanic as film tothe photographer - all about personal preference mostly... Synthetic has its advantages, lubricates slightly better, lasts longer, does not get as thick in cold, or as thin in extreme hot - but so long as you change your oil frequently (3 months min/5000 k) with non syn you should be fine.

Answer 4

The only person who is going to notice the switch is the guy who's been selling you the more expensive synthetic oil.

Answer 5

As long as you change your oil every 3000 miles, any brand of conventional oil will do. But if you're one of those careless people who drives their vehicle up to 4000, 5000 , or even 6000 miles or more before changing the oil, then YES, going back to regular oil can harm your engine.

Answer 6

You can switch back and forth , or mix them together ( as in 'synthetic blend').
The idea that you can't switch back comes from the early days of synthetic oil, when it was made for use in aircraft.