I just had the oil changed in My 94 V6 2.5 The masking tape in the engine bay said the last oil change was within 5000km of where I am now. I have 332,000+ on the odo. I had My local "Mr.Lube" put Full synthetic Mobil 1 in. Am I doing the right thing by using Fully synthetic on a high milage engine? Has anyone else here had an engine last this long? She's still smooth,quiet (when I keep my foot out of it, ha ha.) and strong.
I just had the oil changed in My 94 V6 2.5 The masking tape in the engine bay said the last oil change was within 5000km of where I am now. I have 332,000+ on the odo. I had My local "Mr.Lube" put Full synthetic Mobil 1 in. Am I doing the right thing by using Fully synthetic on a high milage engine? Has anyone else here had an engine last this long? She's still smooth,quiet (when I keep my foot out of it, ha ha.) and strong.
If the engine is in good shape there is no issue using a synthetic on a high mileage engine.
The man speaks the truth with regards additives. You should NEVER use them. Period. All oils are packaged with plenty of additives in them already.
With regards HLA ticking, using a light oil will (of course) make it noisier (hot number is key, not cold). There is no magic oil grade for making this go away, it is a prior maintenance issue that needs to be remedied by replacement or (much cheaper) cleaning as shown here :
Once clean, use ONLY full synthetic because the oil in the lifter is STAGNANT and does NOT circulate significantly during normal regular use. The HLA sits on the end of the valves getting nice and toasty and the oil (if mineral) eventually turns to coke (carbon). It is a physical defect. No oil (not even my favourite one (amsoil)) can fix that :-)
Quote:
If the engine is in good shape there is no issue using a synthetic on a high mileage engine.
Agreed, but if it is dirty, the dirt is the seal, and it will get washed away! (speaks from personal oil stained driveway on low mileage jap engine that was typically jap dirty)
Just thought I'd share my knowledge on that with you lot :-)
92 manual box, getting hard to change gear at top RPM, what oil will help make this better? Tried to speak to you at the JapFest, but you were swamped.
im gonna join in on the gearbox thing, i have a g-series 5 speed manual and it crunches chen cold and sounds alot more mechanical than oily. im using the oil mazda reccomend i cant remember exactly but it was something like ?w-90
btw this box has only done about 70xxx kms but i drove it without a clutch for about 10km... oil has been changed since then. i change the oil in the box every seccond engine oil change so i do it about every 10xxx kms
She got torque? Yer she pulls like a 15 year old.
Quote:
Originally Posted by compnut21
or you could have done what i did and left a screwdriver under the valve cover
probably should have done that. That gear box is now gead, 1st gear makes horrable noises when at WOT, but, I have a new gearbox ready to go in and a new motor. The new motor and box will be reciving some of Australia's finest oils. 10w-40 for the motor, fully synthetic. Not sure on all of the specs, but, im getting it off jessiotrot so he knows what he is doing.
She got torque? Yer she pulls like a 15 year old.
Quote:
Originally Posted by compnut21
or you could have done what i did and left a screwdriver under the valve cover
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
