609albert Posted January 27, 2014 Share Posted January 27, 2014 I have a 54 Mack with the 707 gas engine ,I was told to use 15w40 motor oil ,should it be detergent or non-detergent oil type? thanks Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/ Share on other sites More sharing options...
gearhead204 Posted January 27, 2014 Share Posted January 27, 2014 is this eng. rebuilt or org. if org. id would use non detergent a heavy detergent will clean 60 years worth of crud out of where its stuck and put it in the suction of the oil pump (where you don't want it) id also use a single grade oil according to ambient temp. if eng has been cleaned and rebuilt id use a detergent single grade (that's what it was designed to run on) and the detergent will keep it cleaner Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-228919 Share on other sites More sharing options...
Mike Posted January 27, 2014 Share Posted January 27, 2014 I have a 54 Mack with the 707 gas engine ,I was told to use 15w40 motor oil ,should it be detergentor non-detergent oil type? thanksI use SAE 30 as what was originally called for. Most of these guys would probably say use a 15w40. This is really your call. I try to go with what Mack would have used. I like a detergent oil in all of my engines but chose to use the oil that was already in my thermodyne.mike Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-228920 Share on other sites More sharing options...
1958 F.W.D. Posted January 27, 2014 Share Posted January 27, 2014 All older (and non-rebuilt) gasoline engines usually call for straight 30W non detergent. Quote TWO STROKES ARE FOR GARDEN TOOLS Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-228927 Share on other sites More sharing options...
Dirtymilkman Posted January 27, 2014 Share Posted January 27, 2014 If its rebuilt, absolutely use the best oil you can get. Newer oil is one reason components last so long now. Oil has come a long ways in the last 50 years. Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-229022 Share on other sites More sharing options...
57 bcr Posted January 27, 2014 Share Posted January 27, 2014 Just from personal experience, I had no idea what the previous owner had for oil in the B C R's motor (END 673D w/turbo added),when I bought the truck in '01. I changed to Rotella 15W40 (the same oil I had run in my work trucks). I ran for a few weeks (running the truck every now and then-probably 20 hours),drained it.Then I took off the removable sump (great engineering) off the oil pan and found a little sludge.Cleaned it up,replaced the sump and changed oil & filter. Had a slight decrease in oil pressure last spring when I started it up. Changed out the oil press. guage,with no luck.Then went to the oil press. relief valve,pulled it out & cleaned it.Got my oil pressure back. Whew! Easy fix!! Quote IF YOU BOUGHT IT, A TRUCK BROUGHT IT..AND WHEN YOU'RE DONE WITH IT, A TRUCK WILL HAUL IT AWAY!!! Big John Trimble,WRVA Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-229035 Share on other sites More sharing options...
Loadstar Posted January 28, 2014 Share Posted January 28, 2014 Hi Al, For what it's worth my 707 has been run for the last 20 years or so with 15w-40..... Detergent oil. That's what the previous owner used so that's what I've stayed with. Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-229251 Share on other sites More sharing options...
james j neiweem Posted January 28, 2014 Share Posted January 28, 2014 If you want to go through the hassle add a couple of cans of oil flush(risolene or equivilant) then drain. Repeat until oil is clean, You should. pull the pan and clean the screen and sump, Fill with 15W40 detergent oil as others have said. As stated above the newer detergent oils are far superiorto non detergent oils. However it is more of a hassle and a little more expensive. Good luck. Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-229262 Share on other sites More sharing options...
fauthpk Posted January 30, 2014 Share Posted January 30, 2014 In my Mack I've been told to run 15w40. On one of the forums I read that if an engine has a filter use a detergent Oil. No Filter- Non-Detergent. Best to flush the engine as written above then start new. Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-229467 Share on other sites More sharing options...
scanto1012 Posted August 11, 2022 Share Posted August 11, 2022 What is the engine oil capacity for a 707a gas engine? Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-505985 Share on other sites More sharing options...
VALS327 Posted August 12, 2022 Share Posted August 12, 2022 Off the top of my head it’s 7 1/2 gallons including the lubrifiner oil filter housing. Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-506080 Share on other sites More sharing options...
Joey Mack Posted August 12, 2022 Share Posted August 12, 2022 How about pre filling the oil filter, fill the engine til its in the range, count your qt's.. crank it , run 1 minute, let sit for 10 minutes and top off, keep track of what you put in.. easy breezy... jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/34420-type-of-motor-oil/#findComment-506082 Share on other sites More sharing options...
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