Switching from synthetic to petroleum

[Pete]

I use synthetic oil in my truck. I started doing this way back and it in fact boosted mileage. This truck it made no difference and now it has begun to use a teeny bit of oil. The oil monitoring system just tripped and said time to change the oil. Thinking about switching back to regular petroleum but I believe I have heard once you go synthetic you shouldn't switch back.

Opinions?

 

[Baja28]

I heard that too. I use syn. because you can go twice as long between oil changes.

 

[Pete]

I heard that too. I use syn. because you can go twice as long between oil changes.

The price of synthetic is getting ridiculous. Even going twice as long it is not worth it.

 

[aps45819]

I can't see why there would be a problem but if you're worried about it, I'd switch first to a synthetic blend and then to straight petroleum

 

[GWguy]

The syn labels say that it is fully compatible with petro oil and can be mixed, so I see no reason why you couldn't go back to straight petro oil.

 

[rack'm]

I use synthetic oil in my truck. I started doing this way back and it in fact boosted mileage. This truck it made no difference and now it has begun to use a teeny bit of oil. The oil monitoring system just tripped and said time to change the oil. Thinking about switching back to regular petroleum but I believe I have heard once you go synthetic you shouldn't switch back.

Opinions?

It made a difference back in the 70's because the gaskets would leak if you went from one to the other.......that doesn't happen anymore.

 

[Pete]

Done! No more $80 oil changes. Thank you gentlemen.

 

[Baja28]

The syn labels say that it is fully compatible with petro oil and can be mixed, so I see no reason why you couldn't go back to straight petro oil.

Cool! Todays engines and oil are good for 7500 miles. I'm switching back! Cheap oil changes again.

It made a difference back in the 70's because the gaskets would leak if you went from one to the other.......that doesn't happen anymore.

Thanks! I always wondered why.

 

[Chasey_Lane]

Done! No more $80 oil changes. Thank you gentlemen.

My car specifies synthetic oil AND premium gasoline. Would it hurt my vehicle if every so often I used something else?

FWIW, my last oil change cost me a little over $100. Apparently I have a "unique filter." Hhhmmm...

 

[Baja28]

My car specifies synthetic oil AND premium gasoline. Would it hurt my vehicle if every so often I used something else?

FWIW, my last oil change cost me a little over $100. Apparently I have a "unique filter." Hhhmmm...

My car calls for the same but I use regular and it runs fine. I'm going back to conventional motor oil too.

 

[glhs837]

Most modern cars that specify synthetic and premium can take not using them, but in the case of the premium fuel, you will often lose some power. Of course, if you only use %70-%80 of that power, you will never feel it he loss. In the case of the oil, if you are out of warranty, then no problem, but I will take the extra protection. I wring my engine out pretty good, and its worth a few extra bucks. But my old buddy with a Corvette he never went WOt throttle with, and never exeeded 70mph in, his car would most likely never notice.

(NOTE: Excessive idling like seen in bumper to bumper traffic on a regular basis would oindicate the use of syn, to me anyway)

 

[itsbob]

I heard that too. I use syn. because you can go twice as long between oil changes.

Mercedes used Synthetic and cited 50k between changes..

People would change their oil, use dino and still try to get the 50k miles.. engines blew up, they sued, guess who the court sided with...

I thought with Synthetic the important part was the filter. You could continue to run the same oil, but the filter needed changed.. Amsoil (IF I remember correctly) used to advertise NO more oil changes!!

 

[Baja28]

Mercedes used Synthetic and cited 50k between changes..

People would change their oil, use dino and still try to get the 50k miles.. engines blew up, they sued, guess who the court sided with...

I thought with Synthetic the important part was the filter. You could continue to run the same oil, but the filter needed changed.. Amsoil (IF I remember correctly) used to advertise NO more oil changes!!

Wow! I never heard that. I changed mine every 10K with syn.
I'll continue to use syn. in the boat engines because they work 5 times harder than auto engines.

 

[TimTheToolMan]

Amsoil (IF I remember correctly) used to advertise NO more oil changes!!

Currently, Amsoil advertises up to 25k on oil and filter.

 

[struggler44]

Currently, Amsoil advertises up to 25k on oil and filter.

So I throw $$ away when I change the oil every 7500 using Amsoil......never heard the 25k. Big difference at $55 each change

 

[Pete]

I was using AMSOIL and I changed after running through the oil monitor 2 times, which typically came out to 10-13K. With the 5.3L chevy using 6.2 quarts my oil changes were $80-100 twice a year.

 

[TimTheToolMan]

So I throw $$ away when I change the oil every 7500 using Amsoil......never heard the 25k. Big difference at $55 each change

Depends on which Amsoil you are using. Signature series with an Amsoil filter is good for 25k, XL is good for 10k or six months, and the OE series is for your OEM recommendations.

 

[bcp]

My truck calls for synthetic,
I use the Rotella-T
truck calls for a change every 6k, I dont go past 4k usually

 

[glhs837]

Lot of Suzuki V-twin types swear by Rotella, have it in my DL650.

 

[dave1959]

You can chastise me all you want... Mobil1 & filter @5k ...