toyota tech threw dyno oil in my truck...

[billybronco]

...after i've run Mobil 1 for the past 53K miles....

any cause for alarm???

i plan on going BACK to Mobil 1 next change......should i be okay to wait for 5K to hit or should I change it back to synthetic sooner rather than later???

thanks!

 

[inkpot]

Should be totally compatible. No harm, no foul. Throw a big hissy fit at your tech and get your next oil change for free!! John

 

[billybronco]

roger....i figured.

i've just read how some high mileage engines don't tolerate the switch too well......seals, gaskets, etc......

switched to synthetic @ 50K and run it ever since.

103K now....would hate for the engine to start acting funny.

plan on draining and go synthetic in the next several weeks or so.

hope i'm GTG.

 

[inkpot]

Have run both in my 80 since I got it 3 years ago at 92,000. Now coming up on 140,000. Prefer the Mobile 1 15-50, but have used dino when I could not find it, but I wanted the get the oil change done any way.Ran fine on dino, did seem to use a little more between changes. No difference in wet spots. I don't have anything, YET, that I would consider as a leak. John

 

[billybronco]

10-4. thanks again

 

[1911]

i've just read how some high mileage engines don't tolerate the switch too well......seals, gaskets, etc......

Might have been true at some point early in the history of synthetic oil, though I've never seen it myself, and I've switched to synthetic in engines as old as flatheads manufactured in 1947. Only an old wives tale with good-quality modern synthetics.

 

[billybronco]

sweet.....appreciate it once again fellas.

it'll put my mind at ease a bit.

you know how it goes.......johnny dolittle says you should NEVER switch back to dino once you've got syn in there and vice versa.

tommy two chains says you can swap back and forth whenever you want.

not sure which side to believe sometimes.

 

[1911]

you know how it goes.......johnny dolittle says you should NEVER switch back to dino once you've got syn in there and vice versa.

tommy two chains says you can swap back and forth whenever you want.

not sure which side to believe sometimes.

Yeah, that's the marvel of the interwebs - you can find people who will say absolutely anything on any subject imaginable - with zero accountability or consequences.

 

[Mtbcoach]

Might have been true at some point early in the history of synthetic oil, though I've never seen it myself, and I've switched to synthetic in engines as old as flatheads manufactured in 1947. Only an old wives tale with good-quality modern synthetics.

X2, without sounding like an old fart, never saw anything that ever "proved" this old wive's tale. Lot's of "I have a friend of a friend who read it once somewhere"...

sweet.....appreciate it once again fellas.

it'll put my mind at ease a bit.

you know how it goes.......johnny dolittle says you should NEVER switch back to dino once you've got syn in there and vice versa.

tommy two chains says you can swap back and forth whenever you want.

not sure which side to believe sometimes.

Yeah, that's the marvel of the interwebs - you can find people who will say absolutely anything on any subject imaginable - with zero accountability or consequences.

The wonders of today's times, the old fart in me comes out again. Love how much valuable information that can be found at the drop of a few key strokes. Yet, the sources of much of said information is questionable.

Without sounding like an ih8mud fanboy but...its one thing I like about this place for this type of information. Most of the "experts" in the various forums are very reliable, known away from the internet for their expertise and not afraid to demonstrate what they say...

 

[IndianScout]

I've run both also, no problems at all..

 

[Bastler]

"Synthetic" doesn't mean that it is a totally different product, it just means that it was made in a big kettle at the Mobil plant, from base chemicals, instead of made in the ground over millions of years. Thus, fewer impurities to remove, more consistent molecular structure, etc.

You can more-or-less consider synthetic oil to be a more "pure" oil than conventional, but at the end of the day they are made from the same stuff.

As I recall, the first synthetics that hit the market were mostly gimmicky junk with tons of additives to make you run faster, jump higher, etc. I would certainly believe that some of that garbage caused a few leaks, giving synthetics a bit of a bad name.

I wouldn't lose any sleep over it, myself.