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tchb
08-21-2017, 07:59 PM
How long do you go between oil changes using Mobil 1.

Boat
Truck
Class C RV
HB Vic
08-21-2017, 08:28 PM
I heard synthetic is not the way to go. Petroleum based is


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2FORCEFULL
08-22-2017, 06:28 AM
How long do you go between oil changes using Mobil 1.

Boat
Truck
Class C RV
I still only go 4000 miles or so...
LaveyJoel
08-22-2017, 07:29 AM
Good link on this, remember that it does not break down..it just gets dirty..
https://en.m.wikipedia.org/wiki/Synthetic_oil
HB Vic
08-22-2017, 07:48 AM
Interesting enough, Mercury has gone back to petro based oils for their drives:

http://www.mercuryracing.com/vital-fluids/

I run Kendall 50W in my Teague
Ziggy
08-22-2017, 08:47 AM
All my cars use M1. 5k mile intervals.


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tchb
08-22-2017, 08:48 AM
In our gas turbines in the power world we always uses a Mobil 1 Type senthitic oil because it would not break down with heat.
HB Vic
08-22-2017, 09:27 AM
In our gas turbines in the power world we always uses a Mobil 1 Type senthitic oil because it would not break down with heat.

Heat is the key. Combustion engines don't develop enough heat to warrant full blown synthetic oil. At least thats what I read.
tchb
08-22-2017, 12:45 PM
I wonder if a NASCAR runs light weight synthetic oil??
2manymustangs
08-22-2017, 01:15 PM
I have been running full synthetic in all of my engines for at least 10 yrs now... At first I was skeptical but after seeing how clean the oil has become between changes AND how GNARLEY the oil in my fathers engines are with CONVENTIONAL oil, Im sold...

Additionally, my friends that own a large transmission/powertrain shop tell me that they can ABSOLUTELY see a major difference in the wear characteristics on the big landfill trash truck transmissions/quarry trucks/UPS truck manual gear boxes/rear differentials where they have switched to full synthetic in those shops...

I do know that without ZINC and other additives, your chance of a flat tappet cam failure is quite high ESPECIALLY in the break in period...

Thats all I know about engine/gear box oils :)
tchb
08-22-2017, 03:33 PM
Just changed the truck oil at 3500 miles and next the RV.
76Bonneville
08-22-2017, 05:48 PM
2001 Ford with a 7.3 450,000 miles 15qts change oil every 10,000 and a filter in between at 5000.
Circle boat with a 509 14qts once a season unless there's something that doesn't look right.
Family jet boat 10qts once a year

All running synthetic oil