I read that during oil changes put some oil in the filter before installing recommended for turbos. I did this and the car started right up after the oil change, no usual hesitation. I'll do this for all of my oil changes from now on.

 

I thought you were always suppost to do that? Put some oil in the new filter plus rub some aournd the rubber ring and basically around the top, then install.

 

I always put a little oil in the filter... it doesnt really matter, its going to get sucked in there anyway.

 

I think if anything putting oil in the filter would tend to cause the crankcase to be overfilled. I personally would not recommend it, like you said, it doesn't really matter. Where's the guy who claimed there was a vacuum, I wonder what his opinion is?

 

It wouldnt necessarily be overfilled... anyone changing their oil, even if they're slightly retarded will know to check it. A filter when soaked will take a good 1/4 to 1/2 a quart.

I guess in your case your car will be underfilled

 

ill have to try this from now on....i usually only put some oil on the threads and seal of the filter not inside.

 

That is new to me. I will have to try that out next oil change. I usually just put some new oil around the seal, but have never put oil actually in the filter. Does it make any difference as long as you add the right amount of oil in the crank case?

 

You can't really fill the filter too much since the filter is oriented sideways and would just spill out when you went to install it. Putting some on the rubber seal is key to having not leak and come off easy the next change.

 

I always put it on the seal, but haven't put any in the filter, because I don't want it to spill sideways. I suppose this could negligibly reduce wear though, because oil is available sooner to the engine (after oil changes my engine light is on a couple of extra seconds when I start the car).

 

Um wha? Can you please explain in technical terms how filling the oil filter would have any bearing on overfilling the crank case?

One should always fill the oil filter as much as they can so the engine doesn't starve for oil upon the first start up.

 

I think he meant, if you're adding 4.5qts (like my 2002). I put .2 to .4 qts in the filter (whatever it takes so it is half filled and doesn't spill out when reinstalling) and the rest 4.1 to 4.3 qts in the car. Totalling 4.5 qts.

 

I have not yet done the oil myself on my G (it too has a horizontally oriented filter on its VQ), but I did it several times on my previous vehicle, a V-6 Camry. That engine, the 1MZ-FE, has a filter flange that protrudes almost horizontally too. I found it easy to fill the filter about 3/4, wait for the element to saturate, then fill it almost full, and still install the filter with almost zero spillage. The trick is to approach the flange with the filled filter held open end up, and then tip to the proper orientation just as you're ready to spin it on. The anti-drainback valve keeps most of the oil in, a very small amount will spill from the central "outflow" opening.

My theory (just that, a theory) is that pre-filling does two things. First, it slightly shortens the time that the oil system takes to refill and re-pressurize, and second, it pre-soaks the filter element so that it's ready to flow oil right away on start, rather than resisting flow until it's fully "wetted." I have noticed, in prior vehicles, a slight, and I do mean slight, reduction in the time that it takes the O/P light to go out after the first start.

 

Torkaholic is right on with his explanation. If you catch one of the shows on the Spike TV powerblock they will recommend the same. Obviously, installing a full filter works best on those engines that orient their filter open side up.

 

when i change my oil i put no oil in the filter and i still dont get any buzzers or lights saying low press

 

same here.

 

I just did the mid-term filter-only change on my wife's Sequoia. For experimental purposes, I put the new filter on empty and dry, which I have not done for years. At least in the 4.7 V-8 in this vehicle (which has an oil pressure guage), the O/P took significantly longer to rise from zero than it does when I prefill. With a prefill, the rise is almost instant, with no prefill, the O/P guage sat on zero for at least five seconds, engine running, before it showed any signs of life.

 

"Preoiling" the oil filter takes only a few seconds and does cut down the time for the oil pump to fill the filter and develop oil pressure. It certainly doesn't hurt. The maxi has a crankshaft driven oil pump and a small capacity oil filter so it builds up pressure really quickly anyway. Some engines use a camshaft driven pump and/or have a much larger oil filter where preoiling the oil filter is a "real good" idea.