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98 Camry XLE V6
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3,116 Posts
Discussion Starter · #1 ·
Hey guys me being a moron changed my oil with a SAE rating not recommended by toyota for my car.

I used Penzoil full synthetic 5w-20 not 5w-30...Dont ask why i didnt bother to look at the oil filler cap before filling it with that stuff....it just happend. SO anyways i dont want to waste all that oil and money by draining and buying new stuff, but is this going to be bad for me? Ive been reading around on google etc. about this 5w20 stuff and its supposed to give me better fuel economy and lower emissions but at the cost of my engine life due to its lower viscosity.

I do drive my car hard at times, probably more often than i should anyways, but was wondering if i shouldnt use this oil. I mean i'd rather loose 35 bucks than loose the whole car/engine. I'm just thinking if i took this car out on the track or raced it, the lower rating wouldnt be able to handle the high heat the engine is producing causing the whole engine to wear out REAL Fast.

However I drove it around and it really felt amazingly smooth. I also did a flush before this change.

Any advice or insight into this would be great.

I have a 1mz-fe engine.
 

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98 Camry XLE V6
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3,116 Posts
Discussion Starter · #3 ·
well its lighter...so yea its okay for winter. But i am guilty of driving pretty DARN hard. Im afraid that if i get up there in rpms constantly it will cause A TON of wear. A lot more than usual. Should i be so paranoid?
 

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98 Camry XLE V6
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3,116 Posts
Discussion Starter · #5 ·
I completely understand racing the engine with any oil at any time is BAD for it and reduces life.

But with lower viscosity, eventhough its fully synthetic would harm the engine even more?
 

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Godiva Gifts
'97 Camry LE
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51 Posts
Well, lower viscosity oil doesn't handle high temperatures the cylinders reach, which will cause the cyclinders to overheat and eventually wear out. Higher viscosity oil will provide more cushion in the cylinders, proper lubricant and protection.
 

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Camry
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6,925 Posts
RningOnFumes said:
i say save your money, and since it's winter the oil weight will help a bit too. wait for the next interval to change
Winter or summer, the engine generally runs at about the same temperature.

For most of California you can run 10W-30 no problem and probably better since it doesn't get cold. You might save 0.1 gallon of gas when the oil hasn't warmed up yet, but not much more benefits from using 5W-30 over 10W30, except in colder areas where it might snow.
 

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Ninja-rator
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4,262 Posts
true... didn't mean that... meant it towards teh 35 bucks he paid to get the oil changed this time...for him to wait until his next oil change to switch back
 

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98 Camry XLE V6
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3,116 Posts
Discussion Starter · #10 ·
I've actually e-mailed penzoil too to just ask. DUnno what they'll say. But until i hear from them i wont change it, unless it causes me not to be able to sleep and of course if my car starts acting funny. But again i say if it means loosing 35 bucks to save my engine, then why the heck not. All i can say is today i have learned a good lesson.
 

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Cressida nut
91 Pickup (Hilux)2wd
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4,586 Posts
you know their going to give some half-truth cover-our-asses shpiel about how it "could" do harm. i say take it easy and switch at the next interval. if youre worried enough to email them, just change the damn oil already. and pay attention to what your buying. kinda like measure twice, cut once.
 

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Premium Member
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I ran mobile I in the early 1970's when it first came out. It only came in 5w20 back then.
I ran it in a 1974 Mercedes 450SL in Georgia for years with no problems.

I drove the car for almost 30 years with no mechanical engine problems.
 

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Still confused...
95 camry coupe v6
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2,304 Posts
if you're afraid it'll do damage because you're a hard driver, then drive easy for a change?
if your rpms stick below 3k, i think with the lower vicosity oil it may be more or less fin until the next interval. just for now, drive a bit less hard...
 

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98 Camry XLE V6
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3,116 Posts
Discussion Starter · #19 ·
Lumberg said:
You will be fine.

What matters is that there is appropriate oil pressure.
lol bringing back a really old thread huh? :lol:
Everything is all good. I have since swithced to Mobile 1 SynBlend 5w-30. Been great!
 
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