What grade of motor oil is suitable for the Rav, I been told 5w.30 is good for Toyota engines......Your thoughts please
What grade of oil in engine?
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·i use 10w30, but thats just me, im burnin a lil oil, so im thinkin bout puttin a lil thicker in it.
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35 Posts
Ik somebody on here said not to use the diesel oil.
But lemme tell ya lil bit bout this quality oil.
It’s very affordable. Only good for hot summer days.
We own hundreds of strong running engines. All with rottella 15 w 40
Lots of these run over a quarter million miles.
With minimum wear.
We even run it in our chevy pickups and small engines like four wheelers and rangers.
All diesel oil is, is extra additives for increased heat and wear.
When it turns black, in our tractors, and I mean BLACK.
My father which is an ace mechanic. Said the oil is doing it’s job. And collecting, turning it dark.
Don’t be afraid of it. rottella. 15w 40 diesel oil.
All that 0w 20 synthetic is a major rip off.
And dealers are trying to sell you a new engine. And parts.
It’s cheap stuff. And they want no investment in your motor.
There’s no profit in friendship. Feed your rav4s what I told ya. And watch the clock turn 300k miles
In fact. I’m buying a brand new 19 Toyota RAV4 clean 2mro.
And first thing I’ll do is void my warranty. And dump 15 40 in it.
Guaranteed.
But lemme tell ya lil bit bout this quality oil.
It’s very affordable. Only good for hot summer days.
We own hundreds of strong running engines. All with rottella 15 w 40
Lots of these run over a quarter million miles.
With minimum wear.
We even run it in our chevy pickups and small engines like four wheelers and rangers.
All diesel oil is, is extra additives for increased heat and wear.
When it turns black, in our tractors, and I mean BLACK.
My father which is an ace mechanic. Said the oil is doing it’s job. And collecting, turning it dark.
Don’t be afraid of it. rottella. 15w 40 diesel oil.
All that 0w 20 synthetic is a major rip off.
And dealers are trying to sell you a new engine. And parts.
It’s cheap stuff. And they want no investment in your motor.
There’s no profit in friendship. Feed your rav4s what I told ya. And watch the clock turn 300k miles
In fact. I’m buying a brand new 19 Toyota RAV4 clean 2mro.
And first thing I’ll do is void my warranty. And dump 15 40 in it.
Guaranteed.
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18 Posts
Yeah I had no idea either what the numbers meant so was very happy to read that comment explaining it. Just makes it so much easier when we can actually understand for ourselves. Also, you have a choice, you don't have to buy from the shops...you can get it from Amazon, ebay, walmart etc online and can either pick it up from the store or have it delivered to your door.
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18 Posts
Midas has been doing my oil changes for years but Rav's just seeming to get more sluggish and it's bothering the crap out of me. I've just left them alone on some other stuff (claiming to do an alignment and they never did smh) so I'm trying to figure out how to get her back to her glory ya know. I've been reading and ppl/Toyota recommend the 5W30 but I've read the synthetic oil can leak easier since it's not thick enough but that they also have the high mileage (I'm at about 126K now) that's supposed to protect and get better mpg etc but that the conventional oil's got a lot of junk in it. So, I'm wondering if a synthetic high mileage blend would be good. What do yall think?
Any ideas?
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Oh
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Sorry if this comes across as arrogant, forgive me for being dutch. I have a mechanical engineering background and have had a fair bit to do with hydrodynamic engineering which essentially is what oil flow and pressure is all about. Folks please take this seriously if you wish to look after your RAV4, use ONLY and ALWAYS manufacturers specific oil requirements in viscosity and type and always service to log book intervals. Using a different viscosity can seriously affect the longevity of your engine, gearbox or drivetrain. The oil has 3 purposes: Primarily for cooling, secondly for providing hydrodynamic separation (pressure) and thirdly for boundary protection (lubricity).
So if for instance you would put a thicker viscosity oil in the results would be: more load on your oil pump due to higher flow resistance and slower flow throughout the engine and therefore not whisking away the heat that is needed. The engine would run hotter and hotter means softer metal parts so speeding up wear. Many will say that a thicker oil increases oil pressure, they are right when it comes to pressure at the gauge, which measures it at the pump, but this does not show the pressure drop at the end of the oil galleries where it has dropped significantly more due to the decreased flow rate.
The decreased flow rate also affect the hydrodynamic layer of oil on bearing journals where reduced flow rate and pressure will allow metal to metal contact and test the boundary layer to extremes.
So please folks, for the sake of our engines do the right thing, run the oil that the engine has been engineered for.
So if for instance you would put a thicker viscosity oil in the results would be: more load on your oil pump due to higher flow resistance and slower flow throughout the engine and therefore not whisking away the heat that is needed. The engine would run hotter and hotter means softer metal parts so speeding up wear. Many will say that a thicker oil increases oil pressure, they are right when it comes to pressure at the gauge, which measures it at the pump, but this does not show the pressure drop at the end of the oil galleries where it has dropped significantly more due to the decreased flow rate.
The decreased flow rate also affect the hydrodynamic layer of oil on bearing journals where reduced flow rate and pressure will allow metal to metal contact and test the boundary layer to extremes.
So please folks, for the sake of our engines do the right thing, run the oil that the engine has been engineered for.
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3,780 Posts
yup the synthetic 5/30 is the way i role here.
for iowa temps it works well in the rav.
and use the better filter as well.
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I just saw something saying to use 5W20 for less than 75,000 miles, and 5W30 for over 75,000 miles on my 2008 Rav4 3.5l. I didn't see who the source of that information was, but that's a new one to me. I guess I can see the idea behind it, but I've never heard that before. There's not a huge difference between the 2 anyway. Anyone have thoughts on this?
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