Diffential Fluid Misfill
03-07-10, 05:51 PM
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Diffential Fluid Misfill
Hi all,
Currently have an 03 Ls430 and am getting ready for the 90K service. I recently replaced (per DIY) brakes (front rotors / pads; rear pads), brake fluid flush, transmission drain / refill, and the rear differential. Thanks for all the guidance and how-to through the search feature on the forum! Good stuff!
My question is, I bought most of my fluids from a Toyota dealership in the area and by mistake I used 75W145 hypoid gear oil AP GL-5 'instead' of the recommended SAE90 in the manual for the differential. (Thats what I get for not triple checking things!) Anyway, the service is done, pain cause I had to use a small pump to get it all in there due to clearance. Is this going to cause damage or am I good for awhile? Thanks in advance for the input.
Tony
Currently have an 03 Ls430 and am getting ready for the 90K service. I recently replaced (per DIY) brakes (front rotors / pads; rear pads), brake fluid flush, transmission drain / refill, and the rear differential. Thanks for all the guidance and how-to through the search feature on the forum! Good stuff!
My question is, I bought most of my fluids from a Toyota dealership in the area and by mistake I used 75W145 hypoid gear oil AP GL-5 'instead' of the recommended SAE90 in the manual for the differential. (Thats what I get for not triple checking things!) Anyway, the service is done, pain cause I had to use a small pump to get it all in there due to clearance. Is this going to cause damage or am I good for awhile? Thanks in advance for the input.
Tony
Last edited by 3lexus43; 03-07-10 at 06:09 PM.
03-07-10, 07:29 PM
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SAE90 is the standard toyota spec for diff/t-case fluids. I don't even think it's available in the US. I mainly see 75w90. I use mobil 1 delvac 75w90 GL4/5 synthetic gear oil for all my toyota diff/transfer case needs. I buy it in a 5 gal pail and use a pump, so you can stand next to the car and pump until it starts to drip out of the fill hole. Easy!
To answer you're question, since you are in Louisiana, you're probably okay. The 145 is kind of high (would be great for the summertime in AZ). I would have stuck w/ 75w90 for all-around, but I think you'll be okay..might just get a little worse fuel economy until the drivetrain is warmed up. BTW, some LS430's are spec'd to use synthetic diff oil. It should say to use synthetic on the side of the diff if it is one of them.
To answer you're question, since you are in Louisiana, you're probably okay. The 145 is kind of high (would be great for the summertime in AZ). I would have stuck w/ 75w90 for all-around, but I think you'll be okay..might just get a little worse fuel economy until the drivetrain is warmed up. BTW, some LS430's are spec'd to use synthetic diff oil. It should say to use synthetic on the side of the diff if it is one of them.
03-08-10, 10:11 AM
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SAE90 is the standard toyota spec for diff/t-case fluids. I don't even think it's available in the US. I mainly see 75w90. I use mobil 1 delvac 75w90 GL4/5 synthetic gear oil for all my toyota diff/transfer case needs. I buy it in a 5 gal pail and use a pump, so you can stand next to the car and pump until it starts to drip out of the fill hole. Easy!
To answer you're question, since you are in Louisiana, you're probably okay. The 145 is kind of high (would be great for the summertime in AZ). I would have stuck w/ 75w90 for all-around, but I think you'll be okay..might just get a little worse fuel economy until the drivetrain is warmed up. BTW, some LS430's are spec'd to use synthetic diff oil. It should say to use synthetic on the side of the diff if it is one of them.
To answer you're question, since you are in Louisiana, you're probably okay. The 145 is kind of high (would be great for the summertime in AZ). I would have stuck w/ 75w90 for all-around, but I think you'll be okay..might just get a little worse fuel economy until the drivetrain is warmed up. BTW, some LS430's are spec'd to use synthetic diff oil. It should say to use synthetic on the side of the diff if it is one of them.
Brian
03-08-10, 07:52 PM
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Jim_Chow: Thanks for the advice. I will probably just go get some more differential oil for piece of mind. And I WILL be purchasing the pump as you described to make life a little easier! Good news is that I've driven the car probably around 100 miles now and no unusual noises from the rearend. The differential fluid I used was fully synthetic as well and it was inscribed on the diff as you stated. Anyway thanks for the advice, I'll probably make the swap this weekend. Can't hurt anything. Plus the car being a CPO for a little bit longer don't want any finger pointing if it decides to blow.
BrianJ: When I did change the plugs they were corroded a bit and I had to take a wire brush and some lube to them to get them out. Since the plugs use an allen wrench to remove them, I used an extender bar for leverage, I would imagine that it would be hard to torque them with a typical torque wrench. All I did was tighten them until they were snug and then another quarter turn. Kinda like you would with an oil filter. Just remember to remove the fill plug (top) first before the drain plug (bottom), because if you strip the fill plug after draining you are going to have a bad day. Hope this helps.
Tony
BrianJ: When I did change the plugs they were corroded a bit and I had to take a wire brush and some lube to them to get them out. Since the plugs use an allen wrench to remove them, I used an extender bar for leverage, I would imagine that it would be hard to torque them with a typical torque wrench. All I did was tighten them until they were snug and then another quarter turn. Kinda like you would with an oil filter. Just remember to remove the fill plug (top) first before the drain plug (bottom), because if you strip the fill plug after draining you are going to have a bad day. Hope this helps.
Tony
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