Gear oil - Page 2 - Toyota 4Runner Forum

Drunner97 · 03-09-2020, 01:05 PM

Quote:

Originally Posted by firebirdguy

not sure what year your guys 4runners are, but no 4th gen calls for 85/140 in any of the diff's. & only calls for 80/90 in the rear if you operate below 0*f, otherwise it says straight 90w, but thats hard to find so 80/90 is perfectly fine for all temps... & as of 08 toyota says to use full synthetic the rear also which is usually a 75/90.

the front & center diff call for 75/90 which is only available in a full synthetic. not sure why you would suggest a non synthetic or 85/140 unless theres a specific purpose for it or aftermarket parts call for it.

as for brands, there is nothing wrong with any brand gear or motor oil if it meets the specs of your vehicle. & as mentioned above, walmart gear & motor oils are great, they are made by a major oil company for walmart & have been tested to be very good oils. i use valvoline since its a top rated brand & is usually quite a bit cheaper than the other popular brands like mobil 1 etc.

For one, if you actually read the link from ECGS you'd see a few reasons to run Lucas 85-140, not least of all cling factor and heat dissipation.

Second, I run what's specified by the guys who hold the warranty on my geared and locked differentials. I'll go ahead listen to the experts on this one considering ECGS's reputation in the off road community.

firebirdguy · 03-09-2020, 05:11 PM

Quote:

Originally Posted by Drunner97

For one, if you actually read the link from ECGS you'd see a few reasons to run Lucas 85-140, not least of all cling factor and heat dissipation.

Second, I run what's specified by the guys who hold the warranty on my geared and locked differentials. I'll go ahead listen to the experts on this one considering ECGS's reputation in the off road community.

for one, i did read the link. if you actually read my reply you'd see i simply said that toyota calls for 90w or 80/90 for stock 4runners rear diff, & that 85/140 would only be needed if theres a specific purpose for it or aftermarket parts call for it. im just saying its not needed for the average 4runner on the street, many run to 250-300k without any diff fluid change or special super clingy lube.

second, thats great to run whats specified, you have aftermarket parts & sounds like you probably off road or tow pretty heavy to have done a gear change. that doesnt apply to the majority of more street driven or stock 4runners, so i'll go ahead & listen to the manufacturer of the vehicle on this one considering toyotas reputation in the real world of driving.

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