| Author | Message | ||
| Bill Sebestyen (Bill308)
Member Username: Bill308 Post Number: 433 Registered: 5-2001 |
Peter, With British cars, one rationalizes the oil leakage as active rust control. With a mid engine auto though, only the rear of the car will likely be affected, and it's probably just as likely to accelerate damage to rubber boots like the CV-joint covers. | ||
| '75 308 GT4 (Peter)
Advanced Member Username: Peter Post Number: 2565 Registered: 12-2000 |
Bill, I've been running Syntec in my car and it has been leaking (when it didn't before with dino oil). I figure its a fair trade-off, to get the better protection of a synthetic oil. The spots on the floor I just wipe up...  | ||
| William Badurski (Billb)
Junior Member Username: Billb Post Number: 153 Registered: 6-2001 |
If the analysis showed no metal, probably OK. You could remove one cam bearing cap at the front of the engine to check for wear or abrasion. | ||
| Bill Sebestyen (Bill308)
Member Username: Bill308 Post Number: 431 Registered: 5-2001 |
Peter, The Syntec leaked a lot more. Maybe some of the leakage was due to gas dilution, but there is almost no leakage with the fresh dino oil and it's a lot cheaper. Maybe I'll test this theory during the next oil change as I still have enough Syntec in the garage. | ||
| '75 308 GT4 (Peter)
Advanced Member Username: Peter Post Number: 2562 Registered: 12-2000 |
Bill, any reason why you switched from synthetic oil back to mineral oil? | ||
| Hans E. Hansen (4re_gt4)
Member Username: 4re_gt4 Post Number: 929 Registered: 4-2002 |
Yeah, Larry is who I used. Real nice guy. The proceedure is beyond easy. Insert hose in dipstick tube, bellows-shaped bottle will self-suck the oil out. Cap bottle, insert in zip lock bag (supplied), and put in mailer box - which already has the address and postage. Drop in mailbox. It's a no effort deal, even for the chronically lazy like me. | ||
| Mike Charness (Mcharness)
Member Username: Mcharness Post Number: 288 Registered: 8-2002 |
I've used them also. The owner, Larry, is very helpful and responsive. | ||
| Anthony A. (Yank05)
Junior Member Username: Yank05 Post Number: 131 Registered: 8-2001 |
Thanks, everyone. George, I was happy with the service - it is very thorough and well worth the $20 per sample. here is the link........ www.youroil.net Anthony | ||
| George Jerome Jr. (George14)
New member Username: George14 Post Number: 1 Registered: 2-2003 |
Anthony, which oil testing service did you use and were you happy with them? Thanks, George | ||
| Hans E. Hansen (4re_gt4)
Member Username: 4re_gt4 Post Number: 928 Registered: 4-2002 |
FWIW, my oil (Mobil 1 15W50) showed 6% dilution after 2300 miles. I normally try to change it the first non-rainy weekend after it hits 2000 miles. '75 GT4 with weeping Webers. | ||
| Bill Sebestyen (Bill308)
Member Username: Bill308 Post Number: 430 Registered: 5-2001 |
Anthony, Diluted oil is never a good thing but if no metal was found and you have good oil pressure when hot and the correct grade of oil, you're probably ok. After a lot of tuning this summer and perhaps 2000 miles on a fill of Castrol Syntec, I drained it and replaced it with Castrol 10-40W, for potential early spring use in the CT. The drained oil was dark and pretty diluted with gas but oil pressure was fine before and after the refill. I may be wrong, but I wouldn't worry about it too much. I suspect this is a pretty common condition with carb cars. | ||
| Anthony A. (Yank05)
Junior Member Username: Yank05 Post Number: 130 Registered: 8-2001 |
Hi, During a recent pre-purchase inspection of a '77 308, I took oil samples of both the engine and gearbox. Although, the gearbox analysis came out fine, the engine sample came out as I expected. (Some background: The car recently experienced a coil problem in one bank, cylinders were not firing, and fuel was being dumped into them, thus polluting the oil. The owner never changed the oil after this happened.) So, as expected, the oil analysis came out showing a high fuel dilution. When tested up to temp (I forget the exact number), the weight of the oil was showing to be 10 weight due to dilution. The car was driven about 100 miles with the oil in this condition - not a good thing. The lab results did not indicate any unusual content of metal or anything else present. Now that the oil has been changed, if I repeat the analysis and no metal or anything unusual shows up, would it be safe to say that, luckily, no damage occured from the diluted oil? Any opinions would be appreciated! Thank You, Anthony |