Switch to synthetic oil after 200K miles? - Steve Saunders Goldwing Forums

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post #1 of 19 (permalink) Old 08-25-2019, 07:31 AM Thread Starter
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Switch to synthetic oil after 200K miles?

Except for a few oil changes in the early years, I have always used Honda brand oil. Would I be helping or hurting the engine by changing to a synthetic oil with 207K+ miles? I would like to get another 207 if my own body will hold up LOL.

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post #2 of 19 (permalink) Old 08-25-2019, 07:56 AM
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No, won't hurt it a bit.

Nice thing about the synthetics is there's several good Diesel synthetics available at your local WalMart at good price, and almost all are Wet-Clutch compatible. I'm using Shell Rotella T6 5w40. The T4, T5, T6 are all compatible, as is Mobile 1 and the Delo oils.

After switching oils I'd do the first oil change a little early (it will be mixed with the little bit of Dino oil still left in the engine after draining) but after that 10k-15k miles on a synthetic oil change is not unreasonable.
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post #3 of 19 (permalink) Old 08-25-2019, 09:55 AM
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Originally Posted by biker4jesus View Post
Except for a few oil changes in the early years, I have always used Honda brand oil. Would I be helping or hurting the engine by changing to a synthetic oil with 207K+ miles? I would like to get another 207 if my own body will hold up LOL.
Why mess with success? Keep doing what got you all those miles.
It is not unheard of an older high mileage vehicle developing oil seepage problems after switching to a full synthetic. Have seen it happen more than a couple times during my years in the Trade.

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post #4 of 19 (permalink) Old 08-26-2019, 03:48 PM
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don't do it since many mechanics esp stealer ones will tell u it will blow up the engine.


In reality u will be fine. first 2-3 three oil changes do at 5k miles. the synthetic esp the diesel oils all will clean out the engine and any dino sludge that has built up. maybe do a flush with www.auto-rx.com to clean the engine out which it was designed to do before going to syn then u wouldn't have to do the 5k oil changes.

as was said rotella 5w40 is excellent. many like the 15w50 syn oils. always good info here www.bobistheoilguy.com.
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post #5 of 19 (permalink) Old 08-26-2019, 06:10 PM
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Oh, it will destroy the engine!!!!!!!!!!

BS....

my Briggs 'n Straton V-Twin Husqvarna 26hp engine had 550 hours on it last spring.
I had been keeping 30w non-detergent oil for it on the shelf.

ran out of the 30w, and said "the heck with it", drained the oil, filter.
and filled it up with a jug of Mobile-1 10w40

funny thing that, the Briggs had been using about a half cup of oil with every mowing, about 5 hours....

It used about a cup full of the Synthetic, and then it just simply stopped using oil.

it has almost 600 hours on it now, and I have just today, added a cup of oil to it.
that's over 40 hours of mowing grass that is almost a foot high, and no oil consumed to speak of.

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post #6 of 19 (permalink) Old 08-26-2019, 06:16 PM
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but after that 10k-15k miles on a synthetic oil change is not unreasonable. ? WOW??? that is a LOT OF MILES tween oil changes??? oil gets dirty from blow by/condensation, detritus from clutch material flaking off into the motor... seems like 5000 miles wud be plenty b4 oil change... to me. no matter what the oil is... it is dirty... to me.

i got HD Mobil 1 in the 20w-50 variety on SALE for $3/qt at WM (regularly $10/qt!!! WOW!). i wanted to put it in my old 84 GL but it seems like a waste of EXPENSIVE OIL in an old machine that hs limited nbr of hours left on her (odo gave up at 52k). so i put it in my V TWIN... Kholer (WI) 22HP lawn tractor with Hydro Gear 222-3010L (side driven) transaxle... after clean-out (find/reinstall check valve in pump so it wud go fwd again) of BDU 10/12-122 hydro pump on the Hydro Gear transaxle like synthetic motor oil. HD Purists can cry, its ok.

Hydro gear pumps on riding mowers need oil changed every 50-100 hours of service with 10w-40/15w-50 motor oil. 10-40 is what Hydro gear puts in them from factory, 66-122 oz thru vent hose. run (wheels off ground) burp in neutral, refill, burp, refill run with tires off ground for ~5mins fwd & reverse to get air out of system.
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post #7 of 19 (permalink) Old 08-26-2019, 07:45 PM
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but after that 10k-15k miles on a synthetic oil change is not unreasonable. ? WOW??? that is a LOT OF MILES tween oil changes??? oil gets dirty from blow by/condensation, detritus from clutch material flaking off into the motor... seems like 5000 miles wud be plenty b4 oil change... to me. no matter what the oil is... it is dirty... to me.

i got HD Mobil 1 in the 20w-50 variety on SALE for $3/qt at WM (regularly $10/qt!!! WOW!). i wanted to put it in my old 84 GL but it seems like a waste of EXPENSIVE OIL in an old machine that hs limited nbr of hours left on her (odo gave up at 52k). so i put it in my V TWIN... Kholer (WI) 22HP lawn tractor with Hydro Gear 222-3010L (side driven) transaxle... after clean-out (find/reinstall check valve in pump so it wud go fwd again) of BDU 10/12-122 hydro pump on the Hydro Gear transaxle like synthetic motor oil. HD Purists can cry, its ok.

Hydro gear pumps on riding mowers need oil changed every 50-100 hours of service with 10w-40/15w-50 motor oil. 10-40 is what Hydro gear puts in them from factory, 66-122 oz thru vent hose. run (wheels off ground) burp in neutral, refill, burp, refill run with tires off ground for ~5mins fwd & reverse to get air out of system.

GL1500 engine spec'd by honda using 1988 technology dino oil for 8k oil changes.

just because oil looks dirty/dark means nothing, its doing its job. Only used oil analysis will tell one the condition of the oil.


I used Amsoil 10w30/30 HD diesel oil a few times, maybe the best oil out there just $$$$. did oil analysis at 5k miles and 10k miles, even at 10k oil was still good for continued use.
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post #8 of 19 (permalink) Old 08-26-2019, 08:32 PM
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Quote:
Originally Posted by Mike Myers View Post
Hydro gear pumps on riding mowers need oil changed every 50-100 hours of service with 10w-40/15w-50 motor oil. 10-40 is what Hydro gear puts in them from factory, 66-122 oz thru vent hose. run (wheels off ground) burp in neutral, refill, burp, refill run with tires off ground for ~5mins fwd & reverse to get air out of system.
My 2011 Husqvarna 48" riding lawn tractor manual states the Hydrostatic transmission is not serviceable, I looked and there is no drain plug, nor a fill plug.

This kind of bugs me, but the auto-tranny on my Pontiac Vibe is the same way, no way to check fluid level, or drain it, or fill it.

~ John


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post #9 of 19 (permalink) Old 08-27-2019, 07:04 AM
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My 2011 Husqvarna 48" riding lawn tractor manual states the Hydrostatic transmission is not serviceable, I looked and there is no drain plug, nor a fill plug.

This kind of bugs me, but the auto-tranny on my Pontiac Vibe is the same way, no way to check fluid level, or drain it, or fill it.

epa regs put into place in late '90s to have zero discharge of oils by consumers with help by manufacturers. called planned obsolescence, so when failures occur consumer has to repair $$$$ or buy new $$$$. buy new per epa is newer cleaner technology etc., etc.
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post #10 of 19 (permalink) Old 08-27-2019, 09:30 AM
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A buddy went from dino on his high mile 1500 wing and developed an oil leak. Switched back to dino and the leak stopped. And no it wasn't oil he spilled when he made the change. But things happen, you will probably be fine but why change what works, you have 207,000 miles now and no problems, another thing to consider if you go 10,000 between changes how good of a job is the oil filter doing at that miles.


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