Author Topic: Changing to different trans oil type question (Read 11086 times)

rablack21 · « **Reply #15 on:** July 24, 2013, 04:22:38 PM »

Rupp250, you are correct. ATF is a natural detergent. Alot of people don't realize this, but so is synthetic oil.

jcs003 · « **Reply #16 on:** July 24, 2013, 04:50:39 PM »

i have discovered 75w to improve clutch action and feels like smoother shifts. i have neils upgrade if that is any consequence.

john

937ampd · « **Reply #17 on:** July 31, 2013, 03:14:38 PM »

I've caught a little flak on the other site for stating I use atf in a pinch. Glad to see people putting serious time on engines running atf proving it's perfectly fine to run.

The Phantom · « **Reply #18 on:** August 10, 2013, 08:15:34 PM »

Was just looking in my service manual and it says 4 stroke oil or equivalent. Viscocity is 10w-40 for the transmission. Im kind of confused on why the 80w/85w would be also used in the transmission (as recommended on the bottle for 2 strokes and 4) with obviously a large change in viscosity. Unless im missing something here.

05450r · « **Reply #19 on:** August 10, 2013, 09:27:34 PM »

I use Honda HP4 10/40 in mine,same as what the 450r's use.

mennis1971 · « **Reply #20 on:** August 11, 2013, 09:25:25 AM »

All of the above work, including the tractor fluid which is supposed to work quite well actually, but I haven't tried it. Regardless of what you run, change it often,especially the atf. Oil is cheap insurance for your motor.

C-Leigh Racing · « **Reply #21 on:** August 11, 2013, 11:02:37 AM »

Thats right, when you change often, your cleaning out the junk from everything moving around, scrubbing on each other & none of the junk needs to run through the bearings. At least changing your halfway keeping the junk out of those bearings.
Neil

ledperformance · « **Reply #22 on:** August 18, 2013, 11:29:38 AM »

I have been using Dumonde Tech oils since the late 1980's. Dumonde Tech oil starts with the highest quality base stocks and uses better (expensive) additive packages. In oi,l the the additive package is the highest expense and the most important factor in protecting parts. When you buy oil a good percentage of the cost goes to marketing and advertising. Because Dumonde Tech does almost no advertising when you buy their oil you are paying just for a better oil. Dumonde Tech is providing us all with a level of oil technology we could not buy unless we had inside factory connections.
I could carry and number of oils that would be more profitable to my business. I use only Dumonde Tech, because it protects my customers investment better than other products. Vintage machines like TRX 250R's have many parts that are practically irreplaceable. I suggest that running cheaper oil on oil is not the place to save money.

jfwyatt1 · « **Reply #23 on:** August 18, 2013, 09:10:32 PM »

i recently switched to running regular universal synthetic atf after reading on here and was really suprised how much crud that came out of the tranny on the first 2 oils changes now it seems that my son can get a week or more of riding in the fields and mine dumps near our house before i see any discoloration in the oil so now we are changing the tranny oil about every tank and a half to 2 tanks of gas in stead of every tank using belray gearsaver. but this is not racing conditions or wot all the time either mainly just play riding around the house. i use to use rotella 15w-40 for years and never once had any issues but thats when i had it readily available as i worked at a truck service garage. for now the atf is working well. edit im back to running rotella 15w40 i always have it and its never failed me.

rablack21 · « **Reply #24 on:** August 19, 2013, 08:54:40 AM »

Quote from: ledperformance;9050

I have been using Dumonde Tech oils since the late 1980's. Dumonde Tech oil starts with the highest quality base stocks and uses better (expensive) additive packages. In oi,l the the additive package is the highest expense and the most important factor in protecting parts. When you buy oil a good percentage of the cost goes to marketing and advertising. Because Dumonde Tech does almost no advertising when you buy their oil you are paying just for a better oil. Dumonde Tech is providing us all with a level of oil technology we could not buy unless we had inside factory connections.
I could carry and number of oils that would be more profitable to my business. I use only Dumonde Tech, because it protects my customers investment better than other products. Vintage machines like TRX 250R's have many parts that are practically irreplaceable. I suggest that running cheaper oil on oil is not the place to save money.

I completely agree with this. Quality oil is worth the money. The additive packages is where the proprietary part of different oil companies come into play. Oil companies have access to the same quality base stocks available to purchase. However, the additives put in the oil are the secret concoctions that each oil company has come up with to make that oil better suited for it's design purpose. This of course takes alot of money, time, and research. This is why you pay a premium for certain oils. Very few times, if ever, does an oil or lubricant only have one purpose. Even with trans oil, the lubricant should be able to:
have a strong enough film strength to keep all gears, bearings, etc, lubricated to prevent wear
condition clutch materials to allow maximum hook up with minimal slippage or glazing
condition seals to prevent seepage
have anti foaming agents
have high temperature additives to prevent thinning under high temp high rpms
provide rust protection

I realize that not everyone expects all this from their trans oil or event cares, but this is what I expect out of mine.