Oil... Can I go from synthetic to non-synthetic?

[DarrenX33]

With all the talk of Rotella vs. other brand oils this question came up offline. I am running Mobil 1 in my Z. I was under the impression that once you run synthetic it is not recommended you go back to non-synth. Can I do this?

Looking for opinions/advice.

[Keith Tedford]

I've switched to synthetic for easier winter starting and back to regular oil for summer with no problems. I believe that all oils are designed to be compatible unlike some antifreeze products.

[SnThetcOil]

<<With all the talk of Rotella vs. other brand oils this question came up offline. I am running Mobil 1 in my Z. I was under the impression that once you run synthetic it is not recommended you go back to non-synth. Can I do this?

Looking for opinions/advice.>>

Yes, you can switch from the superior performing synthetic oil to the lower performing dead dinosaur lube with no, "problems", other than reduced fuel economy, reduced performance, higher engine operating temperatures, harder winter starts, increased engine wear and higher maintenance costs. But, why would you even *want* to do this?
Steve
17 Year Independent AMSOIL Synthetic Lubricants Dealer
www.lubedealer.com/HiTechOilCo

[SnThetcOil]

<< I've switched to synthetic for easier winter starting and back to regular oil for summer with no problems. >>

Hi Keith. Some other benefits of a good synthetic oil include reduced sludge build up/an internally cleaner engine, superior high temperature engine protection, improved performance, reduced engine wear, lower engine operating temperatures, improved fuel economy and still other benefits. If you want the best for your vehicle, I'd recommend using a good synthetic oil year round.

Steve
17 Year Independent AMSOIL Synthetic Lubricants Dealer
www.lubedealer.com/HiTechOilCo

[SnThetcOil]

<< With all the talk of Rotella vs. other brand oils this question came up offline. >>

What talk are you referring to?

Steve
17 Year Independent AMSOIL Synthetic Lubricants Dealer
www.lubedealer.com/HiTechOilCo

[Salvatore]

The scoop seems to be that Rotella-T has the most zinc and other additives that are good for the engine. It seems that some of the other petroleum based oils removed some of these additives. Maybe because of the catalytic converters?

[P.J.]

With synthetic oil how often do you do oil changes
Peter

[SnThetcOil]

<< The scoop seems to be that Rotella-T has the most zinc and other additives that are good for the engine. It seems that some of the other petroleum based oils removed some of these additives. Maybe because of the catalytic converters? >>>

Rotella-T is an oil formulated for diesel engines.

Steve
17 Year Independent AMSOIL Synthetic Lubricants Dealer
www.lubedealer.com/HiTechOilCo <--Free catalogue

[DarrenX33]

[ QUOTE ]
The scoop seems to be that Rotella-T has the most zinc and other additives that are good for the engine. It seems that some of the other petroleum based oils removed some of these additives. Maybe because of the catalytic converters?

[/ QUOTE ]

Sam thanks for covering for me.

[Keith Tedford]

Our COPO Chevelle went close to 200K miles the first time around on the regular oils of the day. The engine saw 7200 rpm a couple of times and more 6500s that I car to think about. When I tore the engine down the bearings still looked good and the pistons slid out of the bores without ridge reaming. The oil was changed regularly and most of the driving was highway. At 2000-3000 miles a year, I'll be dead and gone long before any of the engines in our old cars are worn out, no matter what oil we use. I use synthetic in our everyday cars due to the miles that we put on them. In the old ones I use synthetic in some but am not convinced that I need it. It can't hurt though. It's probably a little extra cheap insurance.