Ran m20 with no oil, now sounds terrible😳

[agent]

May i ask how old are you OP? Seem rather young or just clueless

Says the guy who isn't old enough to buy beer himself. :roll:

[george graves]

Lets get a video of it parked, and give it a few revs (you can rev the motor under the hood, at the throttle body. If you don't know how to do that, when the motor is off, and the hood is open, stand next to the open driver's door, and press on the gas with your right foot, it should become clear what to move when the motor is running.

[hallockg806]

At some point all the oil you're dumping into this thing is going to cost more then a used m20 longblock. ($200ish, give or take $100)

Lol, I know. But it seems to be running fine

[hallockg806]

Yea OC is hot. It's been 100+ degrees for the past few days. I'll change the oil again and run something more thick for sure! A lot of people have been recommending something like 20w-50 of even 20w-60

[george graves]

At some point all the oil you're dumping into this thing is going to cost more then a used m20 longblock. ($200ish, give or take $100)

[cgk_iii]

My brain hurts

[digger]

Yeah, the million mile test was done in basically ideal conditions for an engine, but I was speaking more of the number of people I've known to use the oil (including myself) for periods of years. I do also agree that the manual is meaningless these days. Heck, I've used Mobil 1 0W-40 for years now and love it.

Isn't OC warm? I'm not too familiar with California but I thought it was more southern...

yeah i was talking general not specific to the OP hence i said in very cold climate.

i use 10W-40 in winter (2C-25C ambient) and 10W-50 when its warmer. when the engine first kicks to life you can tell the difference in viscosity, the engine is much happier. depite them both being 10W there is a big difference when above zero

[ELVA164]

i agree, about the OP engine its been mentioned by others before us but lack of zinc would be his least concern haha.

in general in a very very cold climate id be tempted to try 10W-30 to see the sorts of temps and pressures i got, the engine might prefer it.

i'm not sure how proven oil tests are. mostly its just peoples opinions e.g. i ran the oil and the engine runs fine or my mechanic said this oil is best....the recommendations in the manual are old and oils are much better and advanced than they were in the 80's so nobody knows for sure.

mobil did the million mile test but if you read between the lines you might wonder why they got a million miles but most engines in real world dont get close to half that and what that means for a oil.

Yeah, the million mile test was done in basically ideal conditions for an engine, but I was speaking more of the number of people I've known to use the oil (including myself) for periods of years. I do also agree that the manual is meaningless these days. Heck, I've used Mobil 1 0W-40 for years now and love it.

Isn't OC warm? I'm not too familiar with California but I thought it was more southern...

[digger]

i agree, about the OP engine its been mentioned by others before us but lack of zinc would be his least concern haha.

in general in a very very cold climate id be tempted to try 10W-30 to see the sorts of temps and pressures i got, the engine might prefer it.

i'm not sure how proven oil tests are. mostly its just peoples opinions e.g. i ran the oil and the engine runs fine or my mechanic said this oil is best....the recommendations in the manual are old and oils are much better and advanced than they were in the 80's so nobody knows for sure.

mobil did the million mile test but if you read between the lines you might wonder why they got a million miles but most engines in real world dont get close to half that and what that means for a oil.

[ELVA164]

You can get 10w-30 with enough zinc

True, but he may also want something a bit heavier due to his circumstances. That 15W-50 has been more proven than most oils in this particular engine, too.

[digger]

You can get 10w-30 with enough zinc

[ELVA164]

It's worth pointing out that the biggest reason to immediately drain the 10W-30 and put in something like Mobil 1 15W-50 is older engines like this one need zinc and phosphorus in the oil to help them live. In this country, 10W-30 is mandated to contain less of these things than almost any other weight oil. Many companies don't advertise their ZDDP (zinc/phosphorous) contents, but Mobil does. 15W-50 is what you want.

[AndrewBird]

10W-30 isn't going to hurt anything, just might be a bit thin for warm temps.

At this point, any oil is best. lol You might have gotten lucky and not damaged anything immensely, but that engine is still a ticking time bomb.

[Todd Black 88]

I smell FredK

[TobyB]

...especially because it's been loved very hard just recently...

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