Question about hydraulic valve-lifters

ford recommends oil additive made by GMC

lubricity

h u r c

I will give you empirical advice, only. I dont believe in additives, generally... but I have had both pushrod and overhead cam engines with that problem in the past.

Since I have started using Mobil 1 synthetic, however, even with extended oil change intervals, ...and several cars with more than 185,000 miles on them...I havent heard a peep or click out of lifters or lash adjusters.

My son has a 16 valve 4 that does have the problem. However, he began to use Mobil 1 about 1500 miles ago and he says it has improved significantly in that short time.

While the cost is significantly higher, as I said I go for longer periods

-15,000 plus - between changes... with no known engine problems... i tore down one of my 2.3 OHC's at 185,000 mi. and you would not believe how clean the inside of the engine was.

BUT... if your cold start/drive cycles are short, it isnt wise to go for extended change intervals UNLESS you drive it for a decent distance at least once a week...meaning, I would think a highway trip of more than 45 minutes or so.

Just my opinion